Highlights: 1. It has existed for over 200 thousand years. 2. There are not only splendid natural spots but also precious cultural heritages. 3. It has been inscribed the title of “the first cave in Shandong” by Zhao Junfen----a famous cave-studying expert in China. 4. It is 1280 meters long and the highest and the widest place is up to 30 meters. The cave is large and grand and it consists of 8 halls.