Tags: Mountain Range.
The Bighorn Mountains (Apsáalookěi: Basawaxaawúua or Iisaxpúatahchee Isawaxaawúua) are a mountain range in northern Wyoming and southern Montana in the United States forming a northwest-trending spur from the Rocky Mountains extending approximately 200 miles (320 km) northward on the Great Plains. They are separated from the Absaroka Range which lie on the main branch of the Rockies in western Wyoming by the Bighorn Basin.
