Cantonment on the Uncompahgre, later called Fort Crawford, was a military post in Western Colorado for a decade.
(A cantonment is a temporary military post). It was created to protect white settlers from Native Americans, but became an important social and medical facility in the region. This photo, from the Denver Public Library Special Collections, Z-7190, shows the post as it appeared in 1886. Below is the link to my Daily Sentinel column about the fort.