Detecting a huge hollow cave

British geological explorers have discovered a cave classified as the largest in the world, has a massive space equivalent to York Minster cathedral, England.

The cave has just been found in Ingleborough, north of Yorkshire, England, 14.3m long, 25m wide and 35m high, in a mountain with a height of 723m, ranking second in Yorkshire valley. According to geologists, the main stream and geological movements of the stream are "opaque" and "sharpened" so the cave is so wide. The composition of mountain cave is mainly limestone.

In order to climb down this cave, the explorers of Bradford Potholing expedition club hung in the dark ravine, nearly 110 meters deep. The search and discovery work requires participants to be reckless, and most importantly, passion. Many members of the expedition team said they were dizzy dizzy when trying to climb down.

Here are some newly discovered cave pictures:

In the cave, there is a waterfall twice as high as Niagara.

To get down to the cave, the adventurer had to hang himself on the ropes that were constantly swaying.

According to the adventurers, the heart can swallow York Minster cathedral.