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
Legends of the Hidden Temple Mayan. It included areas for different types of physical challenges: a broad but shallow pool of water (the moat), a set of steps (the Steps of Knowledge), and a large, two-and-a-half-floor vertical labyrinth (the "hidden temple"). At the temple's gate was a talking Olmec head simply named Olmec (voiced by Dee Bradley Baker). Olmec narrated the stories told in the steps of knowledge and temple game challenges (although in the first season, Fogg narrated the temple game challenges). Each episode centered on a particular legend regarding an artifact (real or fictional) from around the world that found its way to