Five mysteries of Longyou Grottoes in Zhejiang Province

The size of the cave is very small, only about 700 square meters. There are a lot of earthwork at the mouth of the cave, and the stairs are also buried under the earthwork pile. Visitors can enter from the fourth cave through the horizontal door dug manually at the bottom of the cave. The cave is rectangular, with three columns arranged in the north-south direction and a rectangular pool in the northeast corner.

Longyou Grottoes are magnificent and rare ancient underground artificial buildings in the world. Only used in May of 1998. In ancient times, there are Longmen Grottoes in Luoyang, the ancient capital of Han Dynasty, and Longyou Grottoes in the ancient capital of Zhou Dynasty in the south, which echo each other from afar and have a great reputation.