(Wyoming)
Oregon Trail Ruts State Historic Site is a preserved site of wagon ruts of the Oregon Trail on the North Platte River, about 0.5 miles south of Guernsey, Wyoming. The Oregon Trail here was winding up towards South Pass. Here, wagon wheels, draft animals, and people wore down the trail into a sandstone ridge about two to six feet, during its heavy usage from 1841–1869. The half-mile stretch is "unsurpassed" and is the best-preserved set of Oregon Trail ruts anywhere along its former length. (Ref: https://en.wikipedia.org/wiki/Oregon_Trail_Ruts)