"Charlie's Ruts": Santa Fe Trail ruts, visible at historical-marker pulloff on U.S. Highway 50/400 between Lakin and Deerfield in Kearny County, Kansas. The camera is facing northeast from the top of a small earth dam; the area of bare ground in left foreground is part of the dam top. Beyond it are parallel light and dark bands; the dark ones are where the vegetation is taller, in the bottoms of the swales formed by the wagon ruts; the light bands are short grass on the higher ground between the swales.