Hang Son Doong is the world's largest known cave, with enough space in some of its passages to fly a Boeing 747 airplane ...

Despite all those years of exploration, still each year, courageous cave explorers discover new tunnels and rooms underground and thereby stretch the known limits of the world's longest and ...

Take an otherworldly journey through Hang Son Doong, the world's largest cave located in Vietnam. The cave is more than 500 feet tall, 650 feet wide, and 29,500 feet long. Video courtesy of Ryan ...

The cave is on five levels with a road straight to the entrance. It is one of the biggest caves in China, and contains a superb collection of beautiful sights. At present, only two levels are open ...

longest, and wildest caves. At dusk, a swarm of bats disperses to hunt in the rainforest surrounding Deer Cave. One of the planet’s largest underground passages, it holds more than two million bats.

Sistema Sac Actun is the world’s largest underwater cave system. Stretching an astonishing 215 miles, this submerged labyrinth of tunnels, caverns, and crystal-clear waterways is not only a ...

The Extremes crew had trekked for two days through steep valleys covered in lush jungle to reach Hang son Doong cave. Set deep inside Phong Nha-Ke Bang National Park, it is one of dozens of caves ...

The world's longest cave in sandstone was recently discovered in India's north-eastern state of Meghalaya. Soutik Biswas joined a group of speleologists for a glimpse of this unique cave.

Explore Mammoth Cave National Park, the longest cave system on Earth, featuring the richest known habitat for cave wildlife in the world. It may be difficult to think of caves as spacious and grand, ...

A popular attraction—and one of our favorite places on Kauaʻi—closed on Oct. 31, 2024. Makauwahi Cave Reserve, the largest ...