The cave is very deep, and the internal temperature is not as cool as the top of the small tianzhufeng mountain. There are several places in the cave with deep Jishuitan, which is probably the pool formed by the melting of some snow on the top of tianzhufeng mountain after falling into the cave.

the cave top, including both sides of the cave wall, is illuminated by the night pearl with big fist, so it is not dark in the cave. On the contrary, the visibility is relatively high, but the cave is so deep that people don't know where to go!

the stalactites hanging high in the cave are...