Many of these archaeologists have concentrated their research and excavations on non-Olmec areas with evidence of ancient complex societies , like the Valley of Oaxaca , the central basin of Mexico and the Pacific coastal sites of Chiapas in southwestern Mexico .
Mexico
Chiapas
/location/location/contains
Mexico
Chiapas
/location/location/contains
Mexico
Chiapas
/location/country/administrative_divisions
Chiapas
Mexico
/location/administrative_division/country
Mexico
Chiapas
/location/country/administrative_divisions
Chiapas
Mexico
/location/administrative_division/country
LOCATION
Oaxaca
LOCATION
Mexico
LOCATION
Pacific
LOCATION
Chiapas
LOCATION
Mexico