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.
Hang Sơn Đoòng Cave, Vietnam
Today in History
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International Tea Day
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World Meteorological Day
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In Apia Harbor for Samoan Independence Day
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Independence Day of the Bahamas
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Celebrating the International Day of Forests
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In the valley of the doll
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A Christmas market with a long history
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Horsetail Fall, Yosemite National Park, California
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World Honey Bee Day
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US Coast Guard: Protecting us for 105 years
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In praise of the old…the very old
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Great on so many levels
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Paralympic Games begin in Paris
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Golden jellyfish in Jellyfish Lake, Palau
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Saskatchewan s spookier side
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‘Think equal, build smart, innovate for change’
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Celebrating World Olive Tree Day
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These laurels are hardy
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Ice and Snow Sailing World Championships
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The Kelpies statues in Falkirk, Scotland
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Welcome to ‘Hollywood North’
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Earth Day and National Park Week
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A hint of spring
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’Chess on ice’
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Step into the dark
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Merry Christmas
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Islands of the Salish Sea
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Día de los Muertos celebrations in Mexico
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Did they forget to fly south?
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Construction workers resting above Manhattan
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