The indigenous languages that are spoken in Argentina count among the least known and studied in South America. The objective of this project is to document four indigenous languages spoken in the Chaco region of Argentina. It aims to collect, process, and archive cultural and linguistic data on the Mocoví (Guaycurú), Tapiete (Tupí-Guaraní), Vilela (Lule-Vilela) and Wichí (Mataco-Mataguayo) in the form of lexicons; integrated, computerized, and digitalized texts; ethnographic descriptions; and video documentaries.