For a desert adventure without the crowds, head to Mesquite Spring in Grapevine Canyon. This 30-site camp is ideally situated for visiting the 32,000-square-foot mansion known as Scotty’s Castle, the 600-foot-deep abyss at Ubehebe Crater, and the strange moving rocks at the Racetrack Playa. Distances here are vast and services few, so triple-check your packing list.