Cacaxtla's an archaeological site located near the southern border of the Mexican state of Tlaxcala. History Cacaxtla was the capital of region inhabited by the Olmeca-Xicalanca people. It isn't known with certainly the origins of the Olmeca-Xicalanca, but they're assumed to come from the Gulf coast region, and were perhaps Maya settlers who arrived in this part of central Mexico around 400 CE. The term "Olmeca-Xicalanca" was first mentioned by Tlaxcalan historian Diego Muñoz Camargo at th… (More on Cacaxtla)