Long Waterfall Xiandong is one of the important scenic spots in Nanxi River National Scenic Area. It is the largest artificial cave in Zhejiang Province. It was selected as the largest artificial suspended cave group in the Great World of Guinness in November 2013 with an area of 6,485 square meters. It is located in Loudi Village, Yantou Town, Yongjia County. The scenic area covers an area of 10 square kilometers and is 3KM away from the Lion Rock attraction. The scenic area consists of Shuilian Cave, Longgong, Feilong Waterfall, Tianchi and Guanjing Pavilion. The glass bridge is under construction and is expected to open at the end of 2018. The bridge is 300 meters long. The drop is 100 meters.