Incredible forest worlds have been discovered in sinkholes in China. Credit: VCG/VCG via Getty Images. Two years ago, scientists uncovered a colossal sinkhole that hosts an ancient, lush forest with trees soaring nearly 130 feet into the air. Situated in the Guangxi Zhuang Autonomous Region, this sinkhole extends over 1,000 feet in length, 490 ... More @Wikipedia
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