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.
A universe underground
Today in History
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Smoking nights in Austria
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Kissing Day
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A bison preserve
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Indigenous Peoples Day
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On the rebirth of the Olympic Games
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Lionfish off the coast of Indonesia
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National Love a Tree Day
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Red lechwe, Okavango Delta, Botswana
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Decorating for Diwali
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Stop and see the flowers
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Sundance Film Festival opens in Park City
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World Maritime Day
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Santorini through the clouds
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Apple Tree Day
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A day of service for Dr. King
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Santo Antão Island in the Republic of Cabo Verde
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Welcome to the Year of the Pig
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Wedded Rocks, Japan
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Aqueduct, Arkadia Park, Poland
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Après-ski in the Dolomites
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Glowworm caves in Australia
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Why do elephants hide in trees?
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Hiding in plain sight
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Tough turf
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Tennis in the park
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Birds of the Drömling
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Mardi Gras flower power
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A sizzling summit hides in the clouds
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Let us introduce you…
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Old Town Quito