Olmec colossal heads by Matthew Stirling in 1938 spurred the first archaeological investigations of Olmec culture. Seventeen confirmed examples are known from four sites within the Olmec heartland on the Gulf Coast of Mexico. Most colossal heads were sculpted from spherical boulders but two from San Lorenzo Tenochtitlán were re-carved from massive stone thrones. An additional monument, at Takalik Abaj in Guatemala, is a throne that may have been carved from a colossal head. This is the only known example from outside the Olmec heartland. Dating the monuments remains difficult because of the movement of many from their original contexts prior to archaeological
Mayan languages mean "on (top of) the mountain". Thus in the Classical Quiché of the "Popol Vuh" we read "u-wach ulew" "on the earth" (literally "its face the earth"). Mayan languages are ergative in their alignment. This means that the subject of an intransitive verb is treated similarly to the object of a transitive verb, but differently from the subject of a transitive verb. Mayan languages have two sets of affixes that are attached to a verb to indicate the person of its arguments. One set (often referred to in Mayan grammars as set B) indicates the person of subjects of intransitive