The world’s deepest sinkhole was discovered and you won’t believe how large it really is
Till now you might have thought that Dean’s Blue hole in the Bahamas was the world’s deepest sinkhole, well you’re wrong because the world has a new sinkhole that can claim the title of being the largest and deepest. The world’s deepest sinkhole has just been discovered in The South China Sea.
The sinkhole in China is 300 feet deeper than the Dean’s Blue hole in the Bahamas and measure 987 feet in depth as compared to Dean’s hole that measures about 663 feet. Discovered on July 22nd this year by Chinese researchers. It has generated much interest among scientists and deep sea divers alike.
1 The Dragon hole is so deep; The London’s shard would easily fit into it
The new sinkhole was named the Dragon Hole and is almost the height of a 1003 ft skyscraper in London named the Shard. It is located near the disputed Parcel islands also known as Xisha in the South China Sea. The measurements of the sinkhole were done by underwater robots, deep sea cameras and sonar scanner which found the depth to measure exactly 987 feet.
The width of the sinkhole is 426 feet at the entrance and 118 feet at the bottom. What has amazed scientists is the 20 new marine species found in the caves.
2 How are sinkholes formed?
Sinkholes form in Lime stone rocks. They are caused by acidic rainwater containing carbon dioxide passing through the rocks. Limestone rocks easily dissolve in such a solution as stated by Dr Mark Cowley from ListersGeo which is a UK based geo technical and geo environmental consultancy.
The dissolution results in three types of common features within the limestone rock. One of these features is a sinkhole. The other two are swallow holes and solution pipes. Sinkholes are deep depressions found on the grounds surface resulting from collapse of chalk and superficial deposits created by dissolution. Underwater sinkholes have formed during the end of the Ice Age at a time when sea levels were lower. This means that these sinkholes that exist today would have actually been above sea level in that period.
3 Research carried out for an entire year
Previously it was the Deans blue hole that was considered the deepest in the world. Located just off Clarence town in, Long Island Bahamas. The deepest known land sinkhole is the Hranicka propast in the Czech Republic.
The Dragon hole was under research for a whole year starting from august 2015 till it was officially declared as the world’s deepest sinkhole. It already has a myth surrounding it where local fishermen call it the eye of the South China Sea and believe it to be the spot where the Monkey king found his cudgel.