Thousand Creek Gorge

A spectacular slot canyon in extreme northern Nevada, on the Charles Sheldon Antelope Refuge not too far off Nevada State Route 140 (grandiosely named the "Winnemucca to the Sea Highway", from an early 20th century promotion). The inset shows a view downstream.
The canyon appears to be "superposed" in origin; that is, as Virgin Valley creek incised its course in this plateau it encountered this body of hard volcanic rock, and perforce eroded its course across it. This is in contrast to an "antecedent" drainage, in which the land rises as the stream keeps cutting to maintain its course.