High Quality Content by WIKIPEDIA articles The Pryor Mountains Wild Horse Range is a refuge for a historically signifcant herd of free-roaming Mustangs, feral horses colloquially called "wild horses," located in the Pryor Mountains of Montana and Wyoming in the United States. The range has an area of 39,650 acres (160.5 km2) and was established in 1968 along the Montana-Wyoming border as the first protected refuge dedicated exclusively for Mustangs...