High Quality Content by WIKIPEDIA articles! Ventana Cave (O`odham: Nakaijegel) is an archaeological site in southern Arizona. It is located on the Tohono O`odham Indian Reservation. The cave was excavated by Emil Haury and Julian Hayden in 1941-42. The deepest artifacts from Ventana Cave were recovered from a layer of volcanic debris that also contained Pleistocene horse, Burden`s pronghorn, tapir, sloth, and other extinct and modern species. A projectile point from the volcanic debris layer was compared to the Folsom Tradition and later to the Clovis culture , but the assemblage was peculiar enough to warrant a separate name – the Ventana Complex. Radiocarbon dates from the volcanic debris layer indicated an age of about 11,300 BP.