About 11,000 years ago, mammoths, horses, camels, and bison roamed this area, and humans known as Clovis hunters killed them here. South of this spot 400 meters lies one of the largest known Clovis mammoth kill sites in North America. When the mammoths were killed, a deep arroyo with steep walls was present. Clovis hunters stalked a family of mammoths, speared a young animal that wandered from the protection of the family, and as the wounded animal grew weak and became separated from the herd, maneuvered it into the arroyo where it could not escape. The hunters then waited until the wound weakened it enough to kill it easily. This kind of event was repeated many times over the years. One pile of bones consisted of the left front quarter of a mature female mammoth with bones of other mammoths stacked around it and the skull of a young male mammoth placed on top. This is believed to have been a frozen meat cache that was never used and spoiled with the approach of warm weather. Another pile of mammoth bones was probably a similar cache that was used. A front quarter of a young mammoth would represent over 500 kilograms of meat. These caches suggest that at least some of the animals were killed during the cold weather months. The site was excavated by the Department of Anthropology at the University of Wyoming under the direction of Dr. George Frison during 1973, 1975, and 1978, and materials from the site can be seen at the Washakie County Museum and Cultural Center and at the University of Wyoming Anthropological Museum.