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Chinese scientists find massive 630ft-deep sinkhole with an entire hidden forest inside

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A massive 630ft-deep sinkhole has been found in China in which a stunning ancient forest range has been discovered by researchers with trees as tall as 131ft (40m) and could include species that have not been seen before.

Cave explorers came across the sinkhole near Ping’e village in Leye County of the Guangxi Zhuang Autonomous Region earlier this month.

The sinkhole is 630ft (192m) deep and measures 1,000ft (304m) in length and 490ft (149m) in width, according to the Xinhua news agency.

The discovery was classified as “large” and experts hiked for several hours before reaching the base of the sinkhole and found three cave entrances.

The sinkhole’s bottom is lined with a “well-preserved primitive forest” with the trees growing up towards the sun, according to experts quoted by the news agency.

Chen Lixin, who led the cave expedition team, told Xinhua that the dense undergrowth on the sinkhole floor was as high as a person’s shoulders and that some of the ancient trees at the bottom were 131ft (40m) tall.

“I wouldn’t be surprised to know that there are species found in these caves that have never been reported or described by science until now,” Mr Lixin said.

China’s Guangxi region is known for its beautiful and sometimes dramatic karst formations.

Leye County alone, where this current sinkhole was discovered, is home to a number of such sinkholes. The discovery of this new one has brought the number of sinkholes in this county to 30, reported Xinhua.

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Karst landscapes are formed primarily by the dissolution of bedrock, George Veni, the executive director of the National Cave and Karst Research Institute (NCKRI) in the US, told Live Science.

“Because of local differences in geology, climate and other factors, the way karst appears at the surface can be dramatically different,” he said.

“So in China you have this incredibly visually spectacular karst with enormous sinkholes and giant cave entrances and so forth,” he added.

“In other parts of the world you walk out on the karst and you really don’t notice anything. Sinkholes might be quite subdued, only a metre or two in diameter. Cave entrances might be very small, so you have to squeeze your way into them.”


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