The Mams are a Mayan ethnicity that numbers about 20,000 found in thirty municipalities, especially Tapachula, Motozintla, El Porvenir, Cacahoatán and Amatenango in the southeastern Sierra Madre of Chiapas. The Mame language is one of the most ancient Mayan languages with 5,450 Mame speakers were tallied in Chiapas in the 2000 census. These people first migrated to the border region between Chiapas and Guatemala at the end of the nineteenth century, establishing scattered settlements. In the 1960s, several hundred migrated to the Lacandon rain forest near the confluence of the Santo Domingo and Jataté Rivers. Those who live in Chiapas are referred to locally as the "Mexican Mam (or Mame)" to differientiate them from those in Guatemala. Most live around the Tacaná volcano, which the Mams call "our mother" as it is considered to be the source of the fertility of the area's fields. The masculine deity is the Tajumulco volcano, which is in Guatemala.