David Kilby is a Professor in the Department of Anthropology at Texas State University and Director of the Ancient Southwest Texas Project. His research focuses on the archaeology of the earliest inhabitants of the Americas, with particular emphasis on the relationship between Ice Age foragers and the changing physical environment of the North American Southern Plains, West, and Southwest. His current projects include the excavation of Bonfire Shelter, perhaps the earliest bison jump in North America, new research at Mockingbird Gap in New Mexico, and ongoing research into Clovis lithic technology and caches.