Vietnam's Son Doong, the world's largest cave passage, started its life millions of years ago as a crack the width of a piece of hair. Today, adventurers marvel at the surreal caverns in its depths.

In 1925, a rescue operation turned into a prolonged and distressing fatality. A man remained alert, able to communicate and responsive as he met his slow end trapped inside a cave. On the 30th of ...

MILAN (AP) — Rescuers on Monday freed a cave explorer who was injured by falling rocks some 40 meters (more than 130 feet) below the surface in Italy's northwestern Piedmont region while on an outing ...

Sơn Đoòng Cave lay hidden for millions of years in Vietnam’s dense jungle, until one man stumbled on it by accident and then ...