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:

Mar 22, 2025World Water Day
Aug 21, 2020Lobster tales
Aug 21, 2021Ambassadors of the airwaves
Sep 7, 2021Whale hello there!
Jun 24, 2019A summertime light show
Sep 9, 2018Welcome to ‘Hollywood North’
Jul 22, 2022Our Lady of the Rocks
Jun 16, 2023World Sea Turtle Day
Sep 20, 2025Oktoberfest begins!
Mar 19, 2024Spring equinox
Aug 18, 2022Surströmming Day
Aug 19, 2018Oh, the places you’ll go
Jan 15, 2026The fishing village of Reine, Norway
Dec 14, 2022National Audubon Society s Christmas Bird Count
Feb 22, 2019A rest stop for the birds
Apr 7, 2021A willowy welcome to spring
Jul 20, 2021Fly me to the moon
Aug 20, 2023International Lighthouse Weekend
Oct 14, 2020In praise of the old…the very old
Oct 21, 2021Here s looking Atchafalaya
May 6, 2020The (Inca) empire strikes back
Jul 5, 2023Porto Timoni beach, Greece
Jun 4, 2023Waiānapanapa State Park, Maui, Hawaii
Jan 26, 2020It s Republic Day in India
Jan 29, 2022Brain coral
Feb 14, 2021An oceanic valentine
Sep 6, 2020Summer winds down in the Hamptons
Aug 3, 2023Zelenci Nature Reserve, Slovenia
Apr 24, 2019Cool water in the Quinault
Jun 16, 2022Seonam Temple, South Korea