A cave deposit in New Mexico has recently been discovered which seems to combine all the favorable circumstances under which the association of man with extinct mammals may be conclusively demonstrated. In the fall of 1935, one of the students at the University of New Mexico reported to the Department of Anthropology that he had located several caves in the Sandia Mountains east of Albuquerque. He also produced such tangible evidence of archaeological remains found on the floor of the caves that an investigation was initiated to survey these and other previously reported caves. Most of them, as might have been expected, indicated but slight occupation of man, recent or ancient.