Two years ago American wingsuiter Jeb Corliss jumped from a height of 2,000 meters to fly through a cave in Tianmen Mountain in Hunan province, the opening of which is 131 meters high, 57 meters wide and 60 meters long.

ABC News described the flight as "threading the needle or dying".

But that cave, compared to the next location he is flying through in China, Corliss says, was huge.