American bison, or buffalo, bones at the Vore Buffalo Jump, a sinkhole and archeological site in Crook County, Wyoming

Title, date and keywords based on information provided by the photographer.
Native American hunters stampeded bison in the direction of the pit, which was deep enough to kill or disable the animals that were driven into it. The Vore site was used as a kill and butchering site from about 1500 AD to about 1800 AD. Archeological investigations in the 1970s uncovered bones and projectile points to a depth of 15 feet. About ten tons of bones were removed from the site, whose pit is estimated to contain the remains of 20,000 buffalo. The site is named for the family of Woodrow and Doris Vore, who donated the site to a foundation that interprets the site for visitors.
Credit line: Gates Frontiers Fund Wyoming Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photographs Division.
Gift; Gates Frontiers Fund; 2015; (DLC/PP-2015:069).
Forms part of: Gates Frontiers Fund Wyoming Collection within the Carol M. Highsmith Archive.