Bighorn Canyon National Recreation Area was created on 1966-10-15.
Montana and Wyoming.
Glen Canyon National Recreation Area was created on 1972-10-27.
Hells Canyon National Recreation Area was created on 1975-12-31.
Bighorn Canyon is located in the northern Rocky Mountains, straddling the border between Montana and Wyoming in the United States. It is part of Bighorn Canyon National Recreation Area, which features stunning landscapes, recreational opportunities, and rich wildlife. The canyon was carved by the Bighorn River and offers various outdoor activities such as hiking, boating, and fishing.
The area of Hells Canyon National Recreation Area is 2,640.525 square kilometers.
Wilfred M Husted has written: 'Bighorn Canyon archeology' -- subject(s): Antiquities, Bighorn Canyon, Bighorn Canyon, Mont, Excavations (Archaeology), Indians of North America, Mont Bighorn Canyon, Montana
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Walnut Canyon National Monument was created in 1915.
Chaco Canyon National Monument was created in 1907.
Somoto Canyon National Monument was created in 2005.
Bryce Canyon National Monument was created in 1923.
Bighorn Canyon rec area 120,296 acres = 188.94 sq mi