This is a site that we visited with Guy Starbuck. Thank you, Guy! This was a lot of fun.
Out in the open Mohave desert there is an outcropping of varnished desert stone, perched on the edge of a valley. The area around this outcropping has many more small boulders scattered on the soft ground. On some of these, as well as on some of the boulders forming the outcropping, are Abstract petroglyphs. Some of the designs are carved, others are pecked. Almost all are darkly revarnished and are often difficult to see.
