Site · Mesoamerica · Mexico (Gulf Coast)
Olmec colossal heads
Olmec heads of up to 25.3 tons were basalt from a volcano's slopes. Two scientists traced it in 1960.
from at least 900 BCE
How did a people without draft animals or wheels move 50 tonnes that far?
Photo: Marshall Astor (Life on the Edge), CC BY-SA 2.0, Wikimedia Commons