Hang Sơn Đoòng, Phong Nha-Kẻ Bàng National Park, Vietnam Aug 9, 2024

In 1991, a Vietnamese logger stumbled upon something big in Vietnam"s Phong Nha-Kẻ Bàng National Park. During a jungle expedition, he found the entrance to a cave with a roaring underground river, which was later named Hang Sơn Đoòng, or "cave of the mountain river." In 2009, the British Cave Research Association led an expedition to explore the site. It was then that they realised something incredible: it was the world"s largest cave.

© Geng Xu/Getty Images

palette

Today in History

A day for the worlds Indigenous populations
9,000-year-old handprints
Aug 9, 2025Raksha Bandhan

More Desktop Wallpapers:

Jan 12, 2026Eurasian otter and pup, Estonia
Feb 20, 2026Horsetail Fall in Yosemite National Park, California, United States
A cantilevered window to the past
Nov 9, 2023Birch trees, Drammen, Norway
Feb 19, 2025European river otter
Mar 27, 2025World Theatre Day
Oct 22, 2023Astoria-Megler Bridge, Oregon
Bryce Canyon hoodoos in winter
Jan 30, 2025Rolands Breach, Spain
The pillar of democracy
Postcard from Italy
A day for cousins of every stripe
Mar 23, 2026World Meteorological Day
Oct 7, 2025Fall colours below Mount Sneffels near Ridgway, Colorado, United States
Aug 4, 2024Friendship Day
Sep 22, 2023World Rhinoceros Day
Sep 16, 2025Nighttime view over the Gulf Coast
Dec 10, 2024Lands End, Cornwall, England
Sep 29, 2024West Cornwall Covered Bridge, Connecticut, USA
Mar 16, 2024Giant panda eating bamboo
Unbe-leaf-able
Aug 8, 2025The Three Musketeers Falls at Iguazú Falls, Argentina
Fly me to the moon
Apr 19, 2024Ring of Brodgar, Orkney, Scotland
Oct 22, 2025Belogradchik Rocks, Bulgaria
King of the jungle? Nope
Jan 3, 2026J.R.R. Tolkien Day
Jan 5, 2025Pushkarni, Sri Krishna Temple, Hampi, Karnataka
Whats so funny?
Mar 25, 2025Tolkien Reading Day