How many acres is the Horse Range that was established by Congress in Bighorn Canyon National Recreation Area?
Bighorn Canyon National Recreation Area Bighorn Canyon National Recreation Area is a national park unit established by an act of Congress on October 15, 1966, following the construction of the Yellowtail Dam by the Bureau of Reclamation. It straddles the border between Wyoming and Montana. The dam, named after the famous Crow leader Robert Yellowtail, harnesses the waters of the Bighorn River by turning that variable watercourse into Bighorn Lake. The lake extends 71 mi through Wyoming and Montana, 55 mi of which lie within the national recreation area. About one third of the park unit is located on the Crow Indian Reservation. Nearly one-quarter of the Pryor Mountains Wild Horse Range lies within the Bighorn Canyon National Recreation Area.
Horseshoe Hills The Horseshoe Hills, el. 6673 ft , are a roughly crescent-shaped range of hills north of Manhattan, Montana in Gallatin County, Montana. They lie in the area between the southern Big Belt Mountains and the northern Bridger Range. The hills are bounded on the north by Sixteen Mile Creek (which begins in the Crazy Mountains), the first major tributary of the Missouri River. As they are in the rain shadow of the Boulder, Elkhorn, and Bull Mountains to the west, the Horseshoe Hills are notably dry, receiving 10 - 12 inches of precipitation annually. This is especially true on the southern and southeastern flanks, which are also in the rain shadow of the hills themselves. In the driest areas, Missouri foxtail cacti, plains prickly pear cacti, and yucca abound, as well as prairie rattlesnakes. Much of the hills are private property, but there is also some State, BLM, and National Forest land.