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
Olmec alternative origin speculations Clyde Ahmad Winters have identified the Olmecs with the Mandé people of West Africa. Some researchers claim that the Mesoamerican writing systems are related to African scripts. In the early 19th century, Constantine Samuel Rafinesque proposed that the Maya inscriptions were probably related to the Libyco-Berber writing of Africa. Leo Wiener and others claim that various Olmec and Epi-Olmec symbols are similar to those found in the Vai script (a relatively modern script in Liberia which may have Cherokee influence), in particular, the symbols on the Tuxtla Statuette, Teo Mask, Cascajal Block, and the celts in Offering 4 at La