The Great Crack in China’s Huize County formed due to earth movement 100 million years ago, more than 10 km long, the maximum width is 20 meters, whereas the minimum width is only 1.4 meters. It reaches up to 486 meters below ground.
On both sides of it are very steep cliff walls, dark, quiet, dangerous and maybe deadly, covered with countless vines and trees, looks like two huge arras. Occasionally there are birds flying past, or monkeys jumping over... For thousands of years, no one dared to go near.
In 2002 local government began to explore the Great Crack, and has developed parts of it into a hiking trail, a real nature hike, very popular with domestic and overseas travelers. Of course, some travelers come here just for exploring the undeveloped area in the Great Crack!
The pictures are from here.