Introduction to the Stone Waterfall Cave Sky: Sometimes the cliff is high and there is no path, and sometimes the winding path leads to a secluded sky. When you raise your head, you can see the barking of fairy dogs in the clouds, and when you lower your head, you can see the clear stream above the stone. When people walk through it, they only see roads everywhere but don't know which one to take. There are doors everywhere but not which one to enter. People can't distinguish between east, west, north and south, and don't know where to go. It's like a large natural maze.