Introduction to Yuanwang Cave: Yuanwang Cave is the largest natural karst cave in China and a rare alpine cave group in northwest Sichuan. The length of the cave is 5.8 kilometers. The cave has been carefully carved by nature for thousands of years. It has formed a variety of karst cave wonders with extraordinary workmanship. The famous scenic spots in the cave include "Beautiful Stone Forest", "Yaochi Cave Sky", "Pearl White Jade Pagoda" and "Cliff Stone Qin".