Descend to the biggest karst collapse in the world

Please do not break !!!

El Sótano de las Golondrinas (Cave of Swallows), Mexico is the largest known karst failures in the world.





The hole in the ground 61 meters wide is situated in the woods and leads to the cave situated at a depth of 370 meters.
The miracle of nature attracts thousands of cavers from all over the world every year. The failure is so deep that formed inside the cloud.



These pictures were taken by 61-year-old Dave Bannelom that deals caving for 40 years. Traveled 18 different countries to visit all the most interesting rock formations in the world, he said that the Cave of Swallows - his favorite place.



The cave is a popular base jumpers, but ornithological studies have shown that populations of birds ecosystem failure has begun to decline, which is why access to the failure has been significantly limited.



For the first time after three American failure in December 1967, since cavers from around the world attended these depths. The maximum depth of the dip is almost 500 meters, but the last several hundred meters are available only through a series of crevices.



It is believed that the sinkhole was formed by the collapse of the roofs of the underground cave, which in turn was formed by water erosion along the fault line in the limestone



Flocks of green parrots and white swallows leave the cave each day to wander in the jungle. This explains the origin of the name of the cave - Cave of Swallows.



Once at the bottom right of failure down the balloon



Gender cave is rich in plant life. A thick layer of dust and guano on the bottom is home to the millipedes, insects, snakes and scorpions.

Slightly Wikipedia

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