"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 ruts have formed swales, which run generally northeast-southwest. Camera is facing north-northeast, obliquely across the swales. The dark green yuccas, slightly left of center, are in the bottom of a swale; the vegetation in the bottom of the swale is taller, and appears darker than, the short grass on the high areas between the swales.