Tetelcingo
Tetelcingo is a town in the Mexican state of Morelos. It is located about 6 kilometers north of the city of Cuautla, and because Cuautla has grown enormously, Tetelcingo, with its colonias (Colonia Cuauhtémoc and Colonia Lázaro Cárdenas), is practically swallowed up in the urban area.
Tetelcingo is the homeland of a particularly interesting variant of the Nahuatl language, Tetelcingo Nahuatl, which is called Mösiehuali by its speakers. There are still (as of 2008) a number of speakers in Tetelcingo and the two colonias, but the language is under intense pressure from the urbanization, and highly endangered.
Coordinates: 18°52′08″N 98°55′58″W / 18.86889°N 98.93278°W
...
Wikipedia