A universe underground Jan 2, 2021

A universe underground

When Vietnamese farmer Hồ Khanh stumbled upon this cave in 1991, it was immediately clear the gaping mouth led to a huge, dark, untouched chamber, complete with a free-flowing underground river. What couldn"t have been apparent to him then was that this cave, now known as Sơn Đoòng, is by far the world"s largest by volume.

© David A Knight/Shutterstock

palette

Today in History

Jan 2, 2019Tesla, the visionary
Jan 2, 2020Winter in the Finnish wilds
Jan 2, 2022Prague, Czech Republic
Jan 2, 2023Hohenzollern Castle near Stuttgart, Germany
Jan 2, 2024Prayer flags in Phobjikha Valley, Bhutan
Jan 2, 2025Ardez, Graubunden, Switzerland
Jan 2, 2026Aerial view of Venice, Italy

More Desktop Wallpapers:

Jul 21, 2025Coral Reef Awareness Week
Dec 28, 2020Wildcat in a winter wonderland
Oct 24, 2025Night view of the RMS Queen Mary, Long Beach, California
Feb 8, 2022Extraterrestrial Culture Day
Apr 29, 2018National Park Week: Olympic National Park, Washington
Aug 21, 2024Nazca boobies, Wolf Island, Galápagos Islands, Ecuador
Jun 22, 2018Celebrating Take Your Dog to Work Day
Sep 18, 2024Gujō Hachiman Castle, Gifu prefecture, Japan
Sep 28, 2018Southern right whales sail home to South Africa
Jan 18, 2026White Sands National Park, New Mexico
Nov 14, 2025Manatee Awareness Month
Nov 4, 2022A century since Tut s tomb was discovered
Sep 18, 2019Celebrating Chile’s Independence Day
Nov 21, 20222022 FIFA World Cup
Jun 25, 2019Sutherland Falls in Fiordland National Park
Jun 10, 2023Porto Cathedral, Portugal
Jul 17, 2018Is there a bug-egg emoji for this?
Jan 30, 2018Watson Lake in Granite Dells, Arizona
Aug 31, 2022Blue linckia sea stars in Papua New Guinea
May 4, 2025Star Wars Day
Apr 14, 2019A view fit for a queen
Sep 24, 2020Till the cows come home
Apr 23, 2021A house of grand scale(s)
Mar 7, 2023Terraced rice fields, Yuanyang County, China
Apr 15, 2025World Art Day
Apr 1, 2023Frog Month
Jul 19, 2019A place fit for the gods
Nov 26, 2021Native American Heritage Day
Jan 15, 2023Aura River in Turku, Finland
Jun 1, 2023World Reef Awareness Day