Peralta
Peralta Tierra Blanca · Los Garambullos – Peralta
Epiclassic (c.300–900 CE) Bajío – El Bajío Tradition·Bajío (Tierra Blanca) tradition·🇲🇽 Guanajuato, Abasolo Municipality, Bajío, Mexico
About
About Peralta
Peralta (Tierra Blanca) dominates the Bajío wetlands of southern Guanajuato at 1,710 m as the largest Epiclassic city of the Bajío (300–900 CE). Remarkably, the entire ceremonial precinct is surrounded by a 2-km oval fosso (defensive-flood-canal 5m deep) that doubles as moat and reservoir, within which five stepped pyramid-plazas (10–15m high tezontle-faced) are linked by causeways. The central Recinto de los Gobernantes has a sunken plaza with talud-tablero and a West Mexican ballcourt. Efraín Cárdenas–INAH excavations show Bajío ceramic centralization and evidence for climatic-driven collapse c.900 that stakes El Bajío as a breadbasket before its depopulation.
Why it mattersPeralta (Tierra Blanca) dominates the Bajío wetlands of southern Guanajuato at 1,710 m as the largest Epiclassic city of the Bajío (300–900 CE). Remarkably, the entire ceremonial precinct is surrounded by a 2-km oval fosso (defensive-flood-canal 5m deep) that doubles as moat and reservoir, within wh Type-site defining regional sequence.
Open questions
Mysteries & theories
Mysteries
- 01Chronology and phasing of construction
- 02Function of elite vs communal architecture
Theories
- 01Regional capital coordinating irrigation and exchange
- 02Ritual-ceremonial amphitheatre aligned to astronomy
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.300–750 CE primary
- Period
- Epiclassic (c.300–900 CE) Bajío – El Bajío Tradition
- Culture
- Bajío (Tierra Blanca) tradition
- Builders
- Bajío (Peralta) communities
- Purpose
- Bajío lowland fortified ring-city with five causewayed pyramid plazas inside a 2-km massive encircling ditch-canal
- Excavation
- Partially excavated
c.300–750 CE primary
Initial construction
c.800–900 CE
Major occupation / refurbishment
c.1000–1532
Late horizon / Inca incorporation where applicable
On the ground
Structures & features
20.4710° N · 101.5400° W · 1710 m · 2 mapped features
Recinto de los Gobernantes (Pyramid-Plaza A)
pyramid15m pyramid with talud-tablero stair and sunken plaza inside ring canal
20.4713° N · 101.5398° WRing Canal (Foso) and Causeway Gate
hydraulic2km encircling moat-canal 5m deep with causeway gates toward Lerma floodplain
20.4706° N · 101.5403° W
Gallery