Place vacation souvenirs, plants, art prints, and figurines that don't quite match the rest of your home on shelves or the walls in your cozy cave. If your room allows, add a table and chair ...

Dr. Maxime Aubert, archeologist and geochemist, uses his headlamp to examine the cave art at Leang Lompoa in Maros, Indonesia. Justin Mott I struggle to keep my footing on a narrow ridge of earth ...