A sinkhole is a natural depression or hole in the Earth’s surface which may have various causes. Neither the scientists nor the engineers yet exactly know what causes these holes to emerge. It may happen in the blink of an eye or it may progress gradually but it can happen anywhere.
Check out some of these unreal holes in the earth.
Great Blue Hole (Belize)
The first sinkhole in the list and by far the most amazing is the Great Blue Hole. The Great Blue Hole formed as a limestone cave during the last ice age. It is believed to have been created by a sea level increase 150,000 years ago. The Great Blue Hole is nearly 1,000 feet wide and more than 400 feet deep. This hole is a UNESCO World Heritage Site and is also a popular recreational scuba diving spot.
The Heavenly Pit (China)
The Heavenly Pit sinkhole in China is located in Xiaozhai, Tiankeng in the Chongqing District and it is arguable the largest sinkhole in the world. It is 626 meters long, 537 meters wide, and between 511 to 662 meters deep, with vertical walls. The sinkhole gradually occurred over the last 128,000 years and because of its enormous size, it is frequented by extreme BASE-jumping adventurers.
Dean’s Blue Hole (Bahamas)
It is the deepest sinkhole under the sea that is known to men. At a depth of 202 metres, Dean’s Blue Hole is more than twice as deep as most other blue holes. The entire place is a constant host of the world championship for free diving. According to legend, the hole was dug by the devil, and he still can be found there, dragging people who dare to swim in the hole to their deaths.
Qattara Depression (Egypt)
The vast Qattara west of Cairo, Egypt is the largest natural sinkhole on earth, measuring 80km long by 120km wide. It occurred naturally from the winds that blew the salt beds right down to the water table. It is so huge that recently scientists have attempted to develop a $360 million dollar project that would harness the Qattara for complete energy independence.
The Devil’s Sinkhole (Texas)
The Devil’s Sinkhole is home to almost 3 million of Mexican free-tailed bats. The entire sinkhole is made of limestone. The chamber has an opening that is 15 meters wide and a cavern 106 meters deep. This cave was raided by treasure-seekers and artifact-hunters, they found dart tips and arrowheads dating back as early as 4000 B.C and surprisingly there’s also quite a bit of vegetation found down there.