San Lorenzo Tenochtitlán
San Lorenzo · Tenochtitlán (San Lorenzo) · San Lorenzo Olmec
Early Formative 1500–900 BCE (San Lorenzo phase, Olmec apogee 1500–1200)·Olmec (Olmeca, earliest Gulf Olmec capital)·🇲🇽 Veracruz, Mexico
About
About San Lorenzo Tenochtitlán
Earliest Olmec capital (1500–900 BCE) on 50 ha artificial plateau (700 m long) raised 50 m above floodplain with surrounding ditch and berm modification of natural hill, controlling Coatzacoalcos River wetlands: 10 colossal heads (found broken and reset in two rows), scores of basalt drains (U-shaped fitted stone culverts draining plateau – oldest drainage system in Americas), Laguna de los Cerros ball sculpture stage and Group D palace residences. Ann Cyphers UNAM project since 1990 re-excavated head lines and drainage network proving hydraulic engineering without metal. Violent destruction ~900 BCE ended head veneration.
Why it mattersEarliest Mesoamerican capital demonstrating hydraulic management, plateau engineering and colossal portraiture before La Venta; baseline for Middle Formative collapse (~900 BCE).
Open questions
Mysteries & theories
Mysteries
- 01Why San Lorenzo decapitated and buried all heads simultaneously ~900 BCE – iconoclasm or ritual deactivation
- 02How U-drain basalt aqueduct maintained gradient over 2 km without metal surveying
Theories
- 01Violent mutilation by invading intra-Olmec rival before La Venta hegemony shift – Cyphers finds fresh breaks
- 02Drainage system as palette for water-ritual theatrical display in plaza (acoustic overflow)
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.1500–900 BCE; plateau earthworks 1400–1200 BCE; heads 1200–900 BCE
- Period
- Early Formative 1500–900 BCE (San Lorenzo phase, Olmec apogee 1500–1200)
- Culture
- Olmec (Olmeca, earliest Gulf Olmec capital)
- Purpose
- First Olmec capital, hydraulic hilltop palace center demonstrating earliest monument transport
- Excavation
- Partially excavated
c.1500–900 BCE; plateau earthworks 1400–1200 BCE; heads 1200–900 BCE
Initial construction
c. 1135 CE
Rediscovery
On the ground
Structures & features
17.7460° N · 94.7620° W · 80 m · 3 mapped features
Colossal heads line east Group D
megalith rowTwo rows of 10 basalt heads
17.7465° N · 94.7625° WStone U-drain aqueduct
aqueductFitted U-shaped stone drain line
17.7455° N · 94.7615° WRed Palace (Palacio Rojo)
palacePalatial compound atop plateau
17.7462° N · 94.7610° W
Gallery