Introduction to caves: The mountain below where Yaowang Valley is located is full of interconnected caves. The World Cave Organization has inspected the caves in Yaowang Valley for eight consecutive years and has confirmed that the caves in this area are the largest in Sichuan and even in Asia. There are more than 30 caves that can be visited. Recently, in 2011, a scientific research cave discovered the skull of an ape man from millions of years ago, which was amazing. The stalactites and black stone flowers in each cave are well developed, and the jagged rocks are like underwater coral reefs. The layers upon layers are very spectacular.