Hang Sơn Đoòng cave, Phong Nha-Kẻ Bàng National Park, Vietnam
© Geng Xu/Getty Image
A 'hole' new world. Hang Sơn Đoòng Cave, Vietnam
In 1991, logger Hồ Khanh stumbled upon something big in what is now Vietnam's Phong Nha-Kẻ Bàng National Park. During a jungle expedition, he found the entrance to a cave with a roaring underground river. It was later named Hang Sơn Đoòng, or 'cave of the mountain river' and in 2009, the British Cave Research Association led an expedition to explore it. They realized something incredible: It was the world's largest cave. Hang Sơn Đoòng's main passage is 3.1 miles long, 490 feet wide, and 660 feet high. That's tall enough to fit a 40-story skyscraper.
Related Images
St. Mary Falls in Glacier National Park, Montana
Hocking Hills State Park in Ohio for National Public Lands Day
A bald cypress in the Atchafalaya Basin, Louisiana
Stepping stones in Tollymore Forest Park, County Down, Northern Ireland
Letchworth State Park, New York
The Quinault Rainforest in Olympic National Park, Washington
Sutherland Falls and Lake Quill in New Zealand
From NASA’s Terra satellite, an image of fallstreak holes in clouds over the southern United States
Bing Today Images
Piazza IX Aprile, Taormina, Sicily, Italy
Aug 15, 2023
Chittorgarh Fort, India
Aug 15, 2022
Smögen, Sweden
Aug 15, 2019
Eurasian otter chillaxin' in Shetland, Scotland
Aug 15, 2018
Quaking aspens in Gunnison National Forest, Colorado
Aug 15, 2017
