Sinji Myeongsasimni Beach is located at the center of Dadohaehaesang National Park. The beach got its name from its singing sand, and the name can be literally translated to "sound of sand that can be heard from 4 kilometers away." The beach shore has a x_width of 150 meters and a length of 4 kilometers, covered with shimmering silver sand, and forms a gradual slope into the shallow water. The beach is not only popular for water activities, but also for its fine sand massage.