The Robledo Mountains lie to the north of Las Cruces, New Mexico, and to the east of the Rio Grande continental rift. Much of the exposed rock is from about 280 million years ago (Paleozoic), and the geological footprint is obvious and amazing. You can see a slot canyon in most of these pictures, when far more water ran through this part of the Chihuahuan Desert than does now. Layers of reddish sedimentary rock pronounce the ages and ages of time gone by.
