The Lanxi Underground River is located in the Liudongshan Scenic Area, six kilometers east of the Jinhua Lanxi Market. It is an underground dark river within the cave. The entire underground long river is about 2,500 meters and covers an area of more than 20,000 square meters. It is known as "a must in the sea." You can take a boat and enjoy the cave. After the waterway, it is the center of the underground river. The temperature of the cave is extraordinarily comfortable. The cave is like a fairyland under the illumination of colorful lights. The stalactites and stalagmites are beautiful.