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Definition of BIGHORN MOUNTAINS
mountains N Wyoming extending S from Montana border E of Bighorn River — see cloud peak
Mountain range, southern Montana and northern Wyoming, U.S. It is a range of the northern Rocky Mountains extending 120 mi (193 km), rising abruptly 4,000–5,000 ft (1,200–1,500 m) above the Great Plains and Bighorn Basin. The highest summit is Wyoming's Cloud Peak, at 13,165 ft (4,013 m). Bighorn National Forest covers part of the range. On Medicine Mountain is the Medicine Wheel, a prehistoric stone-spoked circle 70 ft (20 m) in diameter.