Cave diving combines the thrill of scuba diving and with the excitement of exploring a cave; it’s a challenging activity even for experienced explorers. At these four sites — some of the most popular ...

Cave diving may be the most dangerous of adventure sports. But it's also an area where true exploration, going where no one has gone before, is still possible. This Australian team, led by diving ...

Kenny Broad knows you don't have to leave the planet to explore other worlds. Named National Geographic's 2011 Explorer of the Year and a National Geographic Emerging Explorer, he focuses on cave ...

Hidden in the hills of central Portugal is the entrance to Alviela Cave, one of the deepest underwater caves in Europe. Reaching the dive site is an adventure on its own. The team spends hours ...

To portray the hero of the Thai cave rescue in the new film Thirteen Lives, the Hollywood star had to go deep—literally. Mortensen plays the part of Rick Stanton, the legendary British cave diver who ...