Caves discovered in 1975 in the northern Yukon, Canada, which may be the oldest archaeological site in North America. There are deposits of the late glacial period and some artifacts associated with woolly mammoth, Dall sheep, reindeer, and other vertebrates. The radiocarbon dates of bone fragments range from 25,000-12,000 bp. Evidence of human occupation is from at least 13,000-10,000 bp. There was a wedge-shaped microcore, microblades, and burins similar to those from Siberia of the same time. The lowest levels of 20,000 bp have debitage flakes and large numbers of cut and butchered animal bones.