Ungdo Island

웅도

A mudflat island reached only at low tide

⚠ Check the tide times

Address

Ungdo-ri, Daesan-eup, Seosan

The island opens only when the tide goes out, twice a day. You cross, try the mudflats and go see Dungdung Rock on a billion-year-old sediment bed. Half the village walking trail runs on decks over the sea. Miss the tide and the road home floods, so check the schedule first.