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Great Pyramid of Cholula

The Great Pyramid of Cholula, also known as Tlachihualtepetl or the "made-by-hand mountain," is a monumental pre-Columbian complex located in the city of , , and is the largest pyramid in the world by volume, measuring approximately 4.45 million cubic meters. Its base spans about 450 meters on each side, with a current height of 66 meters. Construction began around 200 BCE during the Preclassic period and continued through multiple phases until about 800 CE, incorporating influences from Olmec, , , and Aztec cultures. Dedicated primarily to the god (also known as Ehecatl-Quetzalcoatl in wind aspects), the pyramid functioned as a major religious, political, and pilgrimage center in , symbolizing sacred landscape and mountain worship. The site's history reflects over 2,500 years of continuous occupation, tracing back to at least 800 BCE and possibly as early as 1200 BCE during the Olmec period, making Cholula one of the oldest inhabited cities in the Americas. Archaeological excavations, initiated in 1931 by Ignacio Marquina and continuing until 1971, revealed at least six to nine major construction phases, built primarily with adobe bricks, earth fill, and stucco-covered surfaces featuring talud-tablero architecture in later stages. Key features include an extensive network of over 8 kilometers of tunnels used for exploration and access, vibrant murals such as the third-century "drinkers" mural depicting ritual scenes, and ceremonial plazas like the Patio of the Altars on the south side. The pyramid's development involved successive enlargements, with Teotihuacan-style expansions around 200–700 CE and Toltec modifications from 600–1200 CE, underscoring its role as a hub for trade, diplomacy, and religious ceremonies attended by elites from across central Mexico. Following the Spanish conquest in , the pyramid was mistaken for a natural hill, leading to the construction of the Church of Nuestra Señora de los Remedios atop its summit between 1594 and 1609, which symbolizes the of and colonial traditions. This overlay preserved the structure but limited early recognition of its artificial nature until modern excavations. Today, the site is managed by Mexico's National Institute of Anthropology and History (INAH) as a protected archaeological zone adjacent to the World Heritage-listed Historic Centre of , open to visitors via tunnels, patios, and a site museum, and it holds enduring cultural and architectural importance. Recent discoveries, such as pre-Hispanic braziers and sculptures uncovered during restoration in , continue to reveal details of its ritual use and artistic heritage.

Location and Etymology

Geographical Setting

The Great Pyramid of Cholula is located in San Andrés Cholula, within the state of Puebla, Mexico, at coordinates 19°03′27″N 98°18′07″W, approximately 10 km west of Puebla city center. The site lies in the fertile Puebla-Tlaxcala Valley on the southeast edge of the Central Mexican Plateau, a region characterized by its agricultural productivity due to rivers and streams fed by snowmelt from surrounding mountains. This valley is bordered by mountains to the north, east, and west, opening southward toward Mixtec territories, creating a strategic environmental context for ancient settlement. At an elevation of approximately 2,135 meters above sea level, the pyramid is positioned between the prominent volcanoes Popocatépetl to the southeast and Iztaccíhuatl to the northeast, whose volcanic landscape has influenced the area's geology and history, including past eruptions that impacted local development. The structure's base rises about 66 meters above the surrounding plain, blending into the terrain as an artificial hill. The archaeological zone encompasses 154 hectares, with approximately 90 hectares (about 58%) situated on private land, which limits full exploration and public access while embedding the site deeply within the modern urban fabric of Cholula. This integration reflects centuries of continuous occupation, turning the pyramid into a focal point amid contemporary buildings and streets. Approximately 100 km southwest of , Cholula's position along key Mesoamerican trade routes connected of Mexico to the Gulf and , facilitating the exchange of goods and cultural influences.

Names and Origins

The Great Pyramid of Cholula bears the indigenous name Tlachihualtepetl, which translates to "hand-made mountain" or "constructed mountain," emphasizing its man-made origins while it was intentionally designed and layered over time to resemble a natural hill. This nomenclature reflects the pyramid's role in pre-Columbian Mesoamerican architecture, where structures were often integrated into the landscape to blend sacred artificial forms with the natural environment. The surrounding settlement is known as Cholollan or Cholula, derived from the Nahuatl term Cholōllān, meaning "place of those who have fled" or "place of refuge." This etymology is tied to migration legends involving the Olmec-Xicalanca people, a Gulf Coast group who reportedly settled the area after fleeing conflicts, establishing Cholula as a and cultural hub in ancient . Following the Spanish conquest, the pyramid's artificial nature was obscured by overgrowth and subsequent constructions, leading early colonizers to mistake it for a hill. Construction of the Iglesia de Nuestra Señora de los Remedios began on its summit in 1594, and it was only later, through archaeological recognition, that the structure earned the moniker "Great Pyramid" in colonial and European accounts, highlighting its monumental scale. Today, the pyramid is designated as the Pirámide de Cholula in Spanish-language contexts, underscoring its status as a key in , . It was added to 's tentative list for World Heritage status in 2010, which it retains as of 2025, recognizing its enduring cultural and historical importance as one of the largest ancient monuments.

Historical Development

Origins and Classic Period

The Great Pyramid of Cholula, known anciently as Tlachihualtepetl or "made mountain," originated in the Pre-Classic period with initial settlement and construction by local Preclassic groups around the BCE, with the earliest archaeological layers dating to at least 800 BCE, and initial pyramid construction approximately 200 BCE. These groups, possibly influenced by broader Olmec traditions from eastern , established the site as a ceremonial center, beginning with foundational structures that formed the pyramid's core, measuring about 427 feet per side in its first phase. This early development reflected a blend of local traditions and broader regional influences, marking Cholula's emergence as a key node in Pre-Classic networks of ritual and exchange. During the Classic period (ca. 200–900 CE), Cholula underwent substantial expansion, evolving into a prominent religious and trade hub that supported a peak population of approximately 50,000 inhabitants across an urban area of several square kilometers. The pyramid grew through successive superimpositions, including a second phase around the 3rd century CE reaching 558 feet per side and 148 feet in height, and a third phase expanding to over 1,300 feet per side and 213 feet tall by the mid-Classic. This architectural progression transformed the initial simple mound into a multi-layered complex, incorporating the style—characterized by sloping bases (talud) and vertical panels (tablero)—directly influenced by Teotihuacan's urban and monumental traditions, alongside decorative motifs such as starfish and snails from Gulf Coast cultures. These elements underscored Cholula's role in integrating diverse Mesoamerican influences, fostering a multi-ethnic society engaged in long-distance commerce and pilgrimage. The site was likely dedicated to the deity , central to its ritual significance. By the late Classic period, around the 8th century CE, Cholula faced decline and eventual abandonment, coinciding with broader regional upheavals including the fall of between 650 and 750 CE. Factors such as internal wars, environmental calamities, and possibly the eruption of the nearby volcano contributed to the depopulation of the urban center, while the exact causes, including potential volcanic activity from , remain subjects of ongoing debate among archaeologists, leading to the pyramid's overlay by vegetation and temporary disuse as a major site. This shift marked the end of Cholula's Classic-era prominence, though its foundational layers preserved evidence of a dynamic society that bridged Pre-Classic origins with enduring Mesoamerican cultural patterns.

Postclassic and Colonial Periods

During the Postclassic period (ca. 900–1519 CE), the Great Pyramid of Cholula experienced a significant revival under the influence of Toltec-Chichimeca groups, who reorganized the site as a central religious hub following ethnic migrations and political shifts in central . These groups shifted the primary focus of worship to Ehecatl-, the deity associated with wind and creation, integrating new ceremonial structures such as altars dedicated to this god and incorporating elite burials that reflected meritocratic rituals confirming noble status. Archaeological evidence from the site reveals superimposed layers of Postclassic construction, including human sacrifices and funerary customs tied to Quetzalcoatl veneration, underscoring Cholula's role as a coordinating center for Nahua kingdoms across the region. Cholula's prominence extended into Aztec pilgrimage networks, where it served as a major destination for devotees seeking spiritual renewal through rituals, drawing pilgrims from across and reinforcing its economic and cultural influence. This status made the site a strategic target during the conquest; in 1519, , advised by Tlaxcalan allies amid factional tensions, ordered a on assembled Cholulteca leaders and pilgrims in the main plaza, resulting in the massacre of an estimated 3,000 to 6,000 individuals. Eyewitness accounts from chroniclers and sources describe the event as a preemptive strike to neutralize perceived threats, profoundly disrupting Cholula's leadership and pilgrimage traditions. In the (16th century onward), the pyramid gradually became overgrown with vegetation, transforming into a hill-like that obscured its artificial origins and allowed authorities to repurpose the symbolically. In 1594, construction began on the Iglesia de Nuestra Señora de los Remedios atop the pyramid's summit, a deliberate act to assert Christian dominance over sacred space by overlaying a Catholic sanctuary on the ancient platform. This period also fostered , blending prehispanic rituals with Catholic practices; the annual on 8 September, celebrating the Virgin of Remedios' nativity, incorporated indigenous processions and offerings, attracting thousands and perpetuating Cholula's role as a hybrid religious center into modern times.

Modern Developments

In the early 19th century, the Great Pyramid of Cholula gained recognition as an artificial structure through the explorations of European scholars, notably German naturalist Alexander von Humboldt, who visited the site in 1803–1804 and conducted precise measurements of its base, estimating it at approximately 420 meters per side and affirming its status as one of the largest ancient monuments known. Humboldt's observations, detailed in his 1810 publication Vues des Cordillères, highlighted the pyramid's man-made nature amid its natural hill-like appearance, building on earlier accounts by travelers such as Guillaume Dupaix and Hubert Howe Bancroft, who also documented its immense scale and cultural significance in the late 18th and early 19th centuries. These efforts marked the initial scientific acknowledgment of the pyramid's archaeological value, shifting perceptions from a mere mound to a monumental pre-Hispanic achievement. The 20th century brought systematic investigations beginning in 1931, when Mexican archaeologist Ignacio Marquina initiated the Proyecto Cholula under the auspices of the National Institute of Anthropology and History (INAH), employing tunneling techniques to explore the pyramid's interior and expose portions of its structure. Over the subsequent decades until 1971, the project excavated approximately 8 kilometers of tunnels, uncovering multiple construction phases and architectural features, which significantly advanced understanding of the site's historical development. These excavations contributed to broader preservation efforts, culminating in the designation of the —including the archaeological zone of Cholula—as a in 1987, recognizing the pyramid's integral role in the region's cultural heritage. Following the major excavation phases of the 1930s–1970s, research at the Great Pyramid faced persistent challenges, including restricted access and a shift to limited rescue operations prompted by urban development pressures and bureaucratic hurdles from INAH. Geoffrey McCafferty, who has studied the site since the 1970s, reflected in 2025 on five decades of frustrations, citing denied excavation permits and difficulties navigating the extensive tunnel network beyond tourist areas as key impediments to comprehensive analysis of the pyramid's to Postclassic transitions. Recent initiatives have addressed some of these issues; for instance, INAH-led projects in 2023, supervised by Catalina Castilla Morales, involved surface surveys and tunnel cleanings that revealed structural elements such as an core from the Late , including a brief reference to a among the findings.

Architecture

Overall Design and Dimensions

The Great Pyramid of Cholula, known as Tlachihualtepetl, exemplifies Mesoamerican monumental through its style, characterized by sloping talus bases supporting vertical tablero panels, an influence adapted from traditions. This design facilitated the pyramid's stepped profile, with multiple superimposed layers forming a core of terraced platforms rather than a monolithic solid mass, allowing for gradual expansion over centuries. The structure's engineering emphasized stability through broad, low-angle slopes, integrating local materials to withstand seismic activity in the region. In its final form, the pyramid features a rectangular base measuring approximately 300 by 315 meters, with an overall width of about 450 meters, a height of 66 meters, and a total volume of 4.45 million cubic meters, rendering it the largest pyramid by volume in the world. Construction primarily utilized sun-dried adobe bricks for the bulk of the fill, bound with clay mortar and reinforced with volcanic rock and stones in key structural elements, enabling efficient labor-intensive building without cut stone. These superimposed layers, accumulating over time, contributed to the pyramid's imposing scale while maintaining an integrated form. Externally, the pyramid long appeared as a natural hill blanketed in vegetation and , concealing its artificial origins until systematic excavations in the revealed portions of its facades and contours. This earthen covering not only preserved the structure but also integrated it into the surrounding landscape, enhancing its symbolic role as a sacred .

Superimposed Structures

The Great Pyramid of Cholula, known as Tlachihualtepetl, exemplifies Mesoamerican architectural evolution through its superimposed construction, where successive generations encased earlier pyramids within new layers of bricks, creating a telescoping structure that expanded the base and increased height over time. This engineering technique preserved underlying forms while allowing for ritual continuity and ideological reinforcement, spanning approximately 1,300 years from the Terminal Formative period to the Postclassic era. Archaeological investigations have identified nine distinct construction stages, comprising six major superimposed pyramids that reflect shifting cultural influences and ethnic dominations at the site. The oldest layer, Building A or La Conejera, dates to around 200 BCE and consists of a small platform measuring about 10 meters square, marking the initial ceremonial foundation during the Late Formative period. Subsequent phases enlarged this core: Building B, the Pyramid of the Painted Skulls, constructed ca. 200–350 CE, introduced motifs of stylized skulls on its facade and centered slightly offset from La Conejera, incorporating early Classic period elements. Building C, or the Pyramid of the Nine Stories, erected during the Classic period between 350 and 450 CE, represents a significant expansion with its multi-tiered design and the introduction of the architectural style—sloping talud bases supporting rectangular tablero panels—evident in its exposed facades and shared with influences. Later stages, including four major modifications and additional minor ones, continued this encasement process, with the final Postclassic layer integrating Gulf Coast elements like those from and completing the pyramid's current form by the time of the Spanish arrival. This layered progression not only amplified the monument's scale but also symbolized enduring sacred continuity across Mesoamerican cultures.

Key Elements and Buildings

The Great Pyramid of Cholula comprises several major sub-structures identified through archaeological tunneling and excavation, representing successive phases of construction that form the core of the monumental complex. These buildings, labeled alphabetically by archaeologists, reveal an evolving architectural tradition influenced by regional styles, with each layer encapsulating earlier ones in a process of continuous enlargement and modification. The oldest exposed structure is Building A, followed by Buildings B and C as central pyramids from the Classic period, while later elements like Buildings D, I, and F served as platforms and annexes. Surrounding patios integrated these structures into a broader ceremonial precinct. Building A, known as La Conejera due to its network of interconnected tunnels resembling a rabbit warren, dates to the Late Preclassic (ca. 200–100 BCE) and represents the earliest pyramidal platform at the site. Constructed primarily of with , it features a rectangular basament approximately 10 m² in area, a topped by a 57 cm , and an 8-step western staircase providing access. A chamber measuring 4 m wide by 5 m long includes a two-level floor, indicating functional interior spaces within this simple, three-tiered talud platform that served as the foundational layer for subsequent constructions. Building B, the Pyramid of the Painted Skulls, was erected during the Early Cholula II (ca. 200–350 CE) directly over Building A, marking the transition to more complex forms. This structure employed the architectural style with double-molded tableros, starting with a square base of 107 m per side and four talud bodies inclined at 60 degrees, each accessed by stairs; a later modification added two more bodies, expanding the base to 120 m and raising the height to 43 m. Built with mud and minimal lime, it exemplifies early influences from Teotihuacan-style architecture in the region. Building C, referred to as the Pyramid of the Nine Stories, succeeded Building B in the Early Classic Cholula IIA phase (ca. 350–450 ) and formed a multi-tiered stepped central to the site's Classic-period development. Measuring 180 m per side at its base and reaching 35 m in , it consists of nine superimposed bodies, each with 9–11 steps, constructed using block walls coated in for durability. Symmetrical water channels, 2 m wide, were incorporated between tiers to manage , highlighting advanced for a structure that supported activities atop the growing . Among the later sub-structures, Building D served as a broad platform base during the Late Classic Cholula III phase (ca. 450–500 CE), featuring three bodies similar to those at , with a height of 19 m, dual eastern and western staircases, and facing coated in . Building I, identified as a foundation from the same period, provided a stable base for upper superstructures, though its precise dimensions remain partially explored. Building F, the Annex Structure or Edificio de la Piedra Labrada, dates to Cholula IIIA (ca. 500–700 CE) and includes a western access staircase, two pyramidal bodies, and double-framed tableros; measuring about 70 m long with three 4 m-high tiers, it functioned as an adjacent platform integrated into the complex's expansion. The surrounding patios, developed primarily in the Early Classic and Late Classic phases, enclosed the pyramid's core with open rectangular spaces bounded by low platforms and retaining . For instance, the northeastern patio features 3-step staircases on its northeast and southeast sides, along with alfardas (wing ) and a talud topped by a vertical , creating defined areas that linked the major buildings into a cohesive precinct. These patios, such as those associated with Buildings 3 and 4 on the east and west, facilitated spatial organization around the superimposed pyramid layers.

Courtyards, Altars, and Murals

The Courtyard of Altars, located on the south side of the Great Pyramid complex, served as a key ritual open space during the Late Classic and Early Postclassic periods, featuring stepped platforms and surrounding structures designed for ceremonial activities. This plaza, delineated by major platforms at the base of the pyramid's south stairway, includes low-relief sculptures and stelae integrated into its architectural elements. Four principal altars encircle the courtyard, constructed primarily from stone slabs such as and , often coated in and adorned with carved motifs. Altar 1, positioned on the east side, consists of a 3.5-meter-tall stela on a 30 cm base, featuring El Tajín-style patterns and traces of red , with the structure shattered into over 12 fragments during excavation. Altar 2, on the west side and oriented 24° north of west, bears an slab carved with intertwined motifs, associated with Epiclassic period ceramics and child . Additional features include the Altar Olmeca, a miniature pyramid-altar at the south end containing a and Gulf Coast-style ceramics, linking to broader Mesoamerican practices. These altars facilitated offerings, including those potentially tied to worship central to Cholula's religious identity, though specific seashell deposits remain documented in preliminary reports. Murals adorn the courtyard's walls, integrated into recessed panels and tableros of surrounding buildings, depicting ritual scenes and symbolic elements preserved through tunnel excavations initiated by Ignacio Marquina in 1931. The prominent Drinkers' Mural (Mural de los Bebedores), dating to the third century AD in the Early period, spans two panels approximately 6 meters long and illustrates a ceremonial feast with dozens of seated figures holding vessels, some transforming into animal co-essences on rugs, emphasizing themes of ritual intoxication and divine communion. Other mural fragments reveal serpents, deities, , and snails, rendered in vivid pigments including red, yellow, black, blue, and brown, with diagonal bands and star motifs evoking celestial and aquatic symbolism. These artworks, exposed via targeted tunneling, highlight the courtyard's role in Postclassic ceremonial continuity atop earlier foundations.

Excavations

20th-Century Efforts

Excavations at the Great Pyramid of Cholula began in September 1931 under the direction of architect and archaeologist Ignacio Marquina, who was commissioned by Mexico's Secretaría de Educación Pública to investigate the mound without disturbing the colonial church atop it. Marquina employed a innovative horizontal tunneling method, inspired by techniques used at Teotihuacan's , to probe the pyramid's interior and reveal its artificial construction layers. This approach involved digging narrow passages from the north side, carefully following the contours of superimposed structures to map the site's chronology while preserving the surface integrity. The project expanded significantly in the 1950s under the Instituto Nacional de Antropología e Historia (INAH), with tunneling efforts intensifying to create an extensive network that reached approximately 8 kilometers in length by 1954, exposing key architectural phases within the pyramid's core. These works, continuing through the 1970s, allowed archaeologists to document multiple building stages dating from the Preclassic to the Postclassic periods, though only about 5% of the overall structure was ultimately revealed through these subsurface explorations. A major phase occurred from 1966 to 1970 as part of the "Proyecto Cholula," initially led by architect Miguel Messmacher, which systematically complemented earlier tunnels with targeted digs on the south and west sides, uncovering evidence of the pyramid's evolutionary design. Throughout these decades, excavations faced substantial challenges, including political delays that caused pauses in funding after the initial 1931–1956 season, as well as logistical difficulties in maintaining the overlying and integrating the with the surrounding modern of Cholula. Preservation concerns necessitated non-invasive methods, limiting surface clearance and prioritizing tunnel-based research to balance archaeological gains with protection. These 20th-century efforts laid the groundwork for later investigations, providing foundational data on the pyramid's construction history.

Recent Discoveries and Research

In 2023, restoration efforts led by Mexico's National Institute of Anthropology and History (INAH) on the Great Pyramid's main stairway, aimed at repairing damage from the 2017 earthquake, uncovered fragments of pre-Hispanic braziers used for ritual fires, along with a 30 cm tall cylindrical sculpture carved from white stone depicting Tlaloc, the Aztec deity associated with rain and fertility. These artifacts, dated to the postclassic period, provide new insights into the site's ceremonial practices and were documented through stratigraphic analysis during the conservation process. Since the 2010s, researchers have increasingly advocated for advanced non-invasive techniques to explore the pyramid's subsurface without further disturbance, including proposals for (GPR) surveys to map potential unexcavated chambers and structures around the site. Although such initiatives have encountered logistical and funding challenges, they reflect a shift toward technology-driven approaches that prioritize preservation amid the pyramid's ongoing role as a living cultural landmark. Collaborative projects between INAH and international teams, such as those involving the , have focused on these methods, integrating with traditional fieldwork to address gaps in tunnel mapping and overall site documentation. In 2025, archaeologist Geoffrey McCafferty published a comprehensive reflection on five decades of research at Cholula, emphasizing the site's resilient occupation over 2,500 years and the value of and stratigraphic studies in refining construction chronologies. This work, presented at the Society for American Archaeology meeting, underscores ongoing INAH-led collaborations that incorporate digital tools for virtual access, including efforts to simulate internal tunnel networks and enhance public engagement without physical intrusion.

Archaeological Findings

Burials

Excavations at the Great Pyramid of Cholula have uncovered over 400 human burials, the majority dating to the Postclassic period (ca. AD 900–1519). These interments reflect ongoing ritual use of the site long after its primary temple function ceased, with concentrations in areas such as the Patio of the Altars and associated platforms. The burials encompass a range of mortuary practices, including elite interments and human sacrifices. Evidence of violence is evident in cases of and perimortem to body parts, suggesting killings such as heart extraction or consistent with Mesoamerican sacrificial traditions. Adult burials often include like beads, shell ornaments, and ceramic vessels. Some burials from the Classic period (ca. AD 200–900) show influences from , including oriented body positions and associated architecture elements nearby. These findings underscore the pyramid's role as a center for ancestor veneration and sacrificial rites, with some elite burials featuring richer offerings.

Artifacts and Iconography

Excavations at the Great Pyramid of Cholula have uncovered a variety of ceramics that reflect the site's chronological development and external influences. In the Classic period layers, Teotihuacan-style thin ware constitutes a significant portion of the assemblage, comprising about 8% of pottery finds and indicating strong cultural and trade connections with the distant urban center of . These finely crafted vessels, known for their thin walls and distinctive slip, were likely imported or locally produced under Teotihuacan influence, serving both utilitarian and ritual purposes. In the Postclassic period, tripod vessels featuring motifs of , the deity, became prominent, often depicting the god in dynamic poses that emphasize his role in Mesoamerican cosmology. Iconographic elements in portable artifacts from Cholula highlight themes of divinity, sacrifice, and natural forces. Stucco fragments depicting feathered serpents, often with elaborate plumage and coiled bodies, evoke the deity's dual nature as a symbol of wind and fertility. Skull motifs appear on ceramics and small sculptural pieces, representing sacrificial rites central to Mesoamerican religious practices and underscoring the pyramid's role in rituals of renewal. A notable 2023 discovery includes a 30 cm cylindrical white stone sculpture of Tlaloc, the rain god, characterized by goggle eyes and fangs, which reinforces Cholula's ties to water and agricultural deities. Other portable finds, such as tools, beads, and offerings, point to extensive networks extending to the Gulf Coast and regions. blades and points, prized for their sharpness in crafting and ritual, were sourced from central Mexican deposits and distributed widely, evidencing Cholula's . beads, valued for their green hue symbolizing life and prestige, and marine shells like those from species, imported from coastal areas, were used in offerings that connected local elites to broader Mesoamerican exchange systems. Symbolically, the iconography embodies Ehecatl-Quetzalcoatl, the wind aspect of the deity, linking to myths where breath animates the world and ensures cyclical renewal. These artifacts collectively illustrate Cholula's position as a hub of cultural synthesis and ritual expression.

Significance

Religious and Cultural Role

The Great Pyramid of Cholula served primarily as a sacred temple dedicated to in his aspect as Ehecatl, the wind god, functioning as a major pilgrimage center for rites associated with fertility, creation, and wind mediation between celestial and terrestrial realms. This dedication is evidenced by iconographic shifts in the site's architecture and artifacts, reflecting the rise of the cult during the Epiclassic period (ca. 700–1000 CE), when Cholula emerged as a hub in a regional network of shrines. As a pilgrimage destination, it drew devotees from across , coordinating Eastern Nahua kingdoms and facilitating socio-political alliances through shared religious practices between 1150 and 1450 CE. Rituals at the pyramid included annual festivals featuring processions, human sacrifices, and communal feasting, as depicted in surviving murals such as the "Drinkers" scene, which illustrates ceremonial consumption of in a context linked to and renewal. While human sacrifices occurred at Cholula as part of broader Mesoamerican , the cult emphasized auto-sacrifice and offerings to ensure cosmic balance, , and agricultural abundance, often invoking and aspects. families sponsored feasts to affirm status, incorporating clowns as intermediaries during processions that emphasized meritocratic and gift exchange. Altars within the complex supported these offerings, integrating the pyramid into broader sacrificial practices. In Toltec-Aztec cosmology, the pyramid embodied the "mountain of heaven," symbolizing a sacred that connected earthly and divine realms, as interpreted through its layered construction and mythological associations with creation myths. This conceptual role influenced regional urbanism by promoting Cholula as a and political nexus, where religious prestige facilitated economic exchanges and cultural diffusion across . Postclassic myths preserved syncretic elements linking the site to origins, portraying as a civilizing prophet whose cult survived ethnic shifts, blending with Aztec narratives of divine kingship and pilgrimage traditions. The pyramid's religious framework paralleled other Quetzalcoatl temples, such as those at Teotihuacan and Tula, forming an Epiclassic network that spread the cult's messianic ideology beyond political boundaries and reinforced Cholula's enduring spiritual authority.

Contemporary Importance and Preservation

The Great Pyramid of Cholula serves as a major tourist attraction, drawing approximately 200,000 to 350,000 visitors annually, with higher numbers during seasonal festivals. The tunnel network spans over 8 km, with a former 800-meter section previously open to the public for exploring the pyramid's layered construction; however, it has been closed since 2020, with INAH conducting renovations as of 2025 to ensure safety and sustainable access. From the summit, the 17th-century Church of Our Lady of Remedies offers sweeping viewpoints of the surrounding Puebla Valley, enhancing the site's appeal as a blend of archaeological and colonial heritage. Contemporary events underscore the pyramid's enduring cultural role. The annual Quetzalcoatl ritual, held during the spring equinox in March, features indigenous dances, music, and ceremonies honoring the deity, attracting around 10,000 to 20,000 participants to the Patio of the Altars. Complementing this, the Festival of the Virgin of the Remedies on September 8 celebrates the church's patron saint through processions, pilgrimages, and traditional dances that fuse indigenous and Catholic elements, drawing thousands of devotees who ascend the pyramid with offerings. Preservation efforts address ongoing challenges from rapid urban expansion in Cholula, which encroaches on the archaeological zone, and natural affecting the pyramid's core due to acidity and . The National Institute of Anthropology and History (INAH) leads initiatives, including 2023 restoration projects on the east side and escalinata that uncovered pre-Hispanic braziers and a Tlaloc fragment. As of 2025, the public tunnels remain closed for renovations focused on safety, ventilation, and lighting, with potential reopening projected for 2026. In 2025, INAH formalized collaborations with the state government for biocultural heritage protection, encompassing sites like Cholula, and advanced tunnel renovations to ensure sustainable access while pursuing broader international partnerships for long-term management.

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