Cahuilla and Serrano are Takic languages, part of the Uto-Aztecan language family. The main aboriginal group of the San Gorgonio Pass are Pass Cahuilla, who call the area Maalki. The Serrano, who had traditionally intermarried with the Pass Cahuilla, and who have lived in the area since well before the inception of the reservation, call the area Maarrkinga'.