Browns Park is a remote mountain valley along the Green River on the Colorado-Utah line with a long history of human use. Native peoples including Ute, Shoshoni, and Comanche groups used the valley long before Euro-American settlement, and explorers, trappers, and traders followed in the late 18th and early 19th centuries. By the 1830s it had become an important base for trapping and settlement, with Fort Davy Crockett built there in 1837. After 1848 it served as a cattle wintering ground, and by the 1860s it was widely known as an outlaw refuge. Since 1965, much of the valley has been protected as Browns Park National Wildlife Refuge.