They discovered a natural stone cave deep in the forest and decided to turn it into a usable shelter. Over the next 48 hours they cleared loose rocks and shaped the interior space by hand. The work ...

Deep inside White River Cave in Georgia, explorers pushed through tunnels covered in graffiti and filled with bats. The passages twisted through dark rooms and narrow ledges where old ropes hung from ...

Hidden inside Vietnam’s Phong Nha-Ke Bang National Park is Son Doong, the largest cave on Earth. It’s so vast that a Boeing 747 could fit through its chambers. Inside, jungles grow beneath openings in ...