The magazine described Son Doong cave in Vietnam’s Phong Nha-Ke Bang National Park as big enough to “accommodate the Washington Monument” and “fit a pair of Boeing 747s side by side”.
The cave is more than five miles long - about five times longer than its nearest competitor for the world’s longest, Deer Cave in Sarawak, Malaysia, it wrote.
In 2009, a group of British scientists from the British Cave Research Association prepared the Son Doong cave for public access in a limited capacity, after extensively surveying the area.
Son Doong cave is at least 6.5 kilometres long, 200 metres wide and 150 metres high. Its largest chamber is a whopping 250 metres tall.
The other world-renowned destinations of the Smithsonian list are Cern, the God particle laboratory in Switzerland, a space line in New Mexico, a gorilla national park in East Africa, the perfect place for watching stars in Chile and ice caves in Alaska.
The cave is more than five miles long - about five times longer than its nearest competitor for the world’s longest, Deer Cave in Sarawak, Malaysia, it wrote.
The Son Doong cave
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Son Doong cave is at least 6.5 kilometres long, 200 metres wide and 150 metres high. Its largest chamber is a whopping 250 metres tall.
The other world-renowned destinations of the Smithsonian list are Cern, the God particle laboratory in Switzerland, a space line in New Mexico, a gorilla national park in East Africa, the perfect place for watching stars in Chile and ice caves in Alaska.
