Olmec colossal heads the monuments with ropes. Two heads from San Lorenzo have traces of niches that are characteristic of monumental Olmec thrones and so were definitely reworked from earlier monuments. Seventeen confirmed examples are known. 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 outside of the Olmec heartland on the Gulf Coast of Mexico. Possible fragments of additional colossal heads have been recovered at San Lorenzo and at San Fernando in Tabasco. Crude colossal stone heads are also known in the Southern Maya area
Mayan languages and a special word class of "positionals" which is typical of all Mayan languages. During the pre-Columbian era of Mesoamerican history, some Mayan languages were written in the logo-syllabic Maya script. Its use was particularly widespread during the Classic period of Maya civilization (c. 250–900). The surviving corpus of over 10,000 known individual Maya inscriptions on buildings, monuments, pottery and bark-paper codices, combined with the rich postcolonial literature in Mayan languages written in the Latin script, provides a basis for the modern understanding of pre-Columbian history unparalleled in the Americas. Mayan languages are the descendants of a proto-language called Proto-Mayan