Possible Clues:

• Spots for buggies
• Kara Kum features
• Mojave hills
• Ridges of wind blown sand
• The way nudes might get all sandy
• The nudes that Sandy makes?
• Multi-grain mounds?
• "If you like making love at midnight, in the ___ of the cape"
• Martian features
• Brown made castles, finally, with lots of sand