Mantle’s Cave is the most important Fremont period archaeological site excavated in northwestern Colorado. Artifacts recovered from the cave were instrumental in defining the Fremont culture. Because the cave is dry, artifacts that are not usually seen…

Routt County is a large county in northwest Colorado, encompassing 2,368 square miles of the Elk and Yampa River valleys and the Park Range and Elkhead Mountains. It is bordered by the state of Wyoming to the north, Jackson and Grand Counties to the east…

The Yampa River snakes 250 miles across northwestern Colorado, primarily in Routt and Moffat Counties. Its watershed encompasses approximately 8,000 square miles in Colorado and Wyoming; in Colorado, the river flows through Craig, Hayden, Milner, and…