Bighorn Canyon National Recreation Area was created on 1966-10-15.
Glen Canyon National Recreation Area was created on 1972-10-27.
Hells Canyon National Recreation Area was created on 1975-12-31.
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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Bighorn Canyon rec area 120,296 acres = 188.94 sq mi
The deepest gorge in Idaho is called Hells Canyon. The canyon is part of Hells Canyon National Recreation Area, and is North America's deepest river gorge.
Hells Canyon National Recreation Area is not within Crater Lake National Park. Indeed, that Canyon is not even administered by the National Parks Service; it's part of the National Forest Service. By road, the two are about 400 miles apart.
There are no national monuments in North Dakota. There is one national park: Theodore Roosevelt National Park. There are two national historic sites: Fort Union Trading Post National Historic Site and Knife River Indian Villages National Historic Site.
Topanga Canyon is located in California. The canyon is part of the Santa Monica Mountains National Recreation Area. It contains lands of both Topanga State Park and the Santa Monica Mountains Conservancy.
In Page, there are some great nature attractions you can attend to go: The Horseshoe Bend, Antelope Canyon, Rainbow Bride National Mounment, Glen Canyon National Recreation Area, Glen Canyon Dam, Antelope Point Marina Village, John Wesley Powell Museum, Vermilion Cliffs National Mounment, Navajo Village Heritage Center, Lonely Dell Ranch Historic District, and Lake Powell National Golf Course.