Soyanggang Lake is also referred to as an inland sea. The lake is served by high-speed tourist ferries connecting the 27km stretch from Soyanggang Dam to Yanggu-eup in just 30 minutes, and the 64km stretch to Bupyeongri Pier in Inje-gun in two hours. There is also a high-speed cruise to see the landscape of Naeseorak Mountain two times a day from May to October. In between sparsely dotted islands, there are enclosed fish farms and in the valleys near the lake, people can enjoy fishing over 50 species of freshwater fish like leather carp, trout, eel, and smelt.