Independence Rock is a large granite rock, approximately 120 ft (36 m) high, in southwestern Natrona County, Wyoming along Wyoming Highway 220. During the middle of the 19th century, the rock was a prominent and well-known landmark on the Oregon Trail and Mormon Trail. It was designated a National Historic Landmark in 1961. It is now part of Independence Rock State Historic Site, owned and operated by the State of Wyoming.
The rock derives its name from the fact that is lay directly along the route of the Emigrant Trail and that specifically emigrant wagon parties bound for Oregon or California, which usually left the Missouri River in the early spring, attempted to reach the rock by July 4 (Independence Day in the United States), in order to reach their destinations before the first mountain snowfalls in autumn.
During the period of westward emigration on the trail (from 1843 to 1869), it was common for emigrants to carve their names in the granite rock, especially near the summit. Other emigrants left behind messages, sometimes for parties behind them on the trial, in axle grease. Many instances of such carved graffiti is visible today at the summit of the rock, which is accessible by an easy free climb up the surface of the rock.
The Rock is located near several other important landmarks on the Trails, including Devil's Gate and Martin's Cove. An LDS-run museum is located near these sites, and is open year-round.
Oregon Trail | Rock formations in the United States | National Historic Landmarks of the United States | Wyoming state parks | Registered Historic Places in Wyoming
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