The Paresi of Brazil, numbering approximately 2,100 people, are No Longer Unreached. They are an Arawakan people of Mato Grosso's Serra dos Parecis whose population, estimated as high as 20,000 before 18th-century gold prospectors began enslaving them for the mines, was driven to near extinction before survivors retreated into the Serra highlands. They mostly adhere to Ethnoreligion and Parecís is their primary language.