Pictograph Cave State Park

Pictograph Cave is an area of three caves located 5 miles south of Billings, Montana, United States, preserved and protected in the 23-acre Pictograph Cave State Park.Excavation of the three caves began in 1937, and they were the site of some of Montana's first professional archeological studies. Over 30,000 artifacts have been identified, with at least 20,000 animal remains recovered from the site. Species range from large mammalian species, including bison and elk, to various species of herpetiles and avies. The presence of these remains result from human predation, processing and consumption as well as non-human predation and individual species who lived and died in and around the site.

Paintings known as pictographs are still visible in Pictograph Cave, which is the largest of the three caves. The pictographs are thought to be between 200 and 2,100 years old.