Cahuilla is a Uto-Aztecan language spoken in the mountains and deserts near the Salton Sea in Southern California. It is severely endangered, with only 5 elderly speakers remaining. Documentation in the early twentieth century focused largely on elicited speech, resulting in a lack of quality data representative of conversational discourse and other genres of naturalistic, culturally relevant speech. Expanding the language documentation with high-quality audio and video will result in a robust language corpus that can be utilized for linguistic analysis and development of language learning materials. Project outcomes will contribute to language revitalization efforts and scholarly linguistic research. Primary investigator: Incamu Ray Huaute