The Helena area was long inhabited by various indigenous peoples. Evidence from the McHaffie and Indian Creek sites on opposite sides of the Elkhorn Mountains southeast of the Helena Valley show that people of the Folsom culture lived in the area more than 10,000 years ago. Before the introduction of the horse 300 years ago, and since, other native peoples, including the Salish and the Blackfeet, visited the area seasonally on their nomadic rounds.