This is a huge lake created when the Geumho tide embankment was constructed in Yeongam on November 1996, as part of a national project to reclaim some 4.3 kilometers stretch of sea from Sampo-ri in Samho-myeon of Yeongam-gun to Byeoram-ri in Hwawon-myeon of Haenam-gun.

Some 100 species of migratory birds, numbering some 300,000, live in this area over the winter on the mud flats which are full of things to eat. Around the embankment where the sea water and fresh water meet, there is a great spot to fish for both fresh water and the sea species. This is perhaps the only place in Korea where the long and silvery cutlass fish, usually found in the deeper areas of the ocean, can be caught while sitting on the rocks along the seashore.