Off Potch Gully Road in Coober Pedy, this bed and breakfast is built into the ground the way the town's opal miners have always lived, trading desert glare for a naturally cool, still interior. The setting is the draw as much as the rooms: a chance to sleep underground in a remote mining town where that is simply how things are done. Independently run, with barbecue facilities, private parking, and pet-friendly rooms among the options.