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The Casper Buffalo Trap is a Paleoindian bison kill site located in a parabolic sand dune south of Interstate 25 on the northwest side of the City of Casper. It is surrounded by industrial and commercial development. The site was excavated by Dr. George Frison of the University of Wyoming in 1971. The animals that were hunted at this site eight to ten thousand years ago is an extinct type of large bison. According to one estimate, the largest males may have weighed as much as two tons. The distance between the tips of the horns on one bison skull measured 42 inches indicating the distance between the horn tips on the once-living animal could have been over five feet. The site has yielded important information regarding prehistoric bison procurement strategies.

Site form available upon request.