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
Archaeology and the Book of Mormon the full extent of their learning and ritual was recorded, only four have survived to modern times (as though all that posterity knew of ourselves were to be based upon three prayer books and "Pilgrim's Progress"). The Maya civilization also left behind a vast corpus of inscriptions (upwards of ten thousand are known) written in the Maya script, the earliest of which date from around the 3rd century BC with the majority written in the Classic Period (c. 250–900 AD). Mayanist scholarship is now able to decipher a large number of these inscriptions. These inscriptions are mainly concerned with the