Montrose County covers 2,243 square miles in western Colorado. Named for its seat, Montrose, the county is bordered to the north by Mesa and Delta Counties, to the east by Gunnison County, to the south by Ouray and San Miguel Counties, and to the west by…

The Gateway tradition refers to a set of archaeological sites within western Montrose and San Miguel Counties, Colorado, that appear similar to Pueblo II–period (AD 900–1150) sites to the south in the core homeland of the Ancestral Puebloans (Figs. 1 and…

Uranium mining in Colorado dates to the late nineteenth century, when uranium resources were discovered in the southwestern part of the state. The region’s Uravan Mineral Belt is rich in carnotite, the ore that produces uranium and vanadium. Both…