Looking at photos online, he knew he’d need a ... a sinkhole inside Son Doong. Part of the cave ceiling collapsed, letting sunlight into the cave and allowing for grass and plants to grow.
Some of the most amazing spectacles around the world are hidden deep underground, beneath rocks, sea and even ice.
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Top 10 - The Jaw-Dropping Views Few Have Ever Seen!Trolltunga - Norway's "Tongue" In The Sky Imagine standing on a rock formation named "Troll's Tongue," suspended 700 meters ...
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