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
Olmec figurine and better known by the general public are those figurines carved, usually with a degree of skill, from jade, serpentine, greenstone, basalt, and other minerals and stones. The "baby-face" figurine is a unique marker of Olmec culture, consistently found in sites that show Olmec influence, although they seem to be confined to the early Olmec period and are largely absent, for example, in La Venta. These ceramic figurines are easily recognized by the chubby body, the baby-like jowly face, downturned mouth, and the puffy slit-like eyes. The head is slightly pear-shaped, likely due to artificial cranial deformation. They often wear