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Bighorn Mountains, Wyoming

#100 of 137 in Nature in Wyoming
The Bighorn Mountains are a mountain range in northern Wyoming and southern Montana in the United States, forming a northwest-trending spur from the Rocky Mountains extending approximately 200 miles (320 km) northward on the Great Plains. They are separated from the Absaroka Range, which lie on the main branch of the Rockies in western Wyoming, by the Bighorn Basin.
The Bighorns were uplifted during the Laramide orogeny beginning approximately 70 million years ago. They consist of over 9000ft of sedimentary rock strata laid down before mountain-building began: the predominantly marine and near-shore sedimentary layers range from the Cambrian through the Lower Cretaceous, and are often rich in fossils. There is an unconformity where Silurian strata were exposed to erosion and are missing. Following the uplift, large volumes of sediments, rich in early Tertiary fossils, were deposited in the adjoining basins. Though many cirques, U-shaped valleys and glacial lakes can be found in the mountain range, the only remaining active glacier is the Cloud Peak Glacier, which is on the east slope of Cloud Peak.
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20 reviews
  • These mountains have been physically isolated from other mountain regions for hundreds of thousands of years. Biologically, this situation has created genetically unique wildlife subspecies. The mts a...  more »
  • We recently rode through the Big Horn Mountains in Wyoming. There are two main highways, US 14 in the north and US 16 in the south. Both were nice rides but we thought the northern route to be best. I...  more »
  • Hwy 14 Thru Big Horn mountain's... WOW take the drive, but baby your vehicle .. Ours had a hot motor, The views are great, The over looks are steep.
  • Beautiful place..........peaceful too

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