The DuWoong wetland is a coastal sand dune in South Korea.
It also protects the coastline and farmland from hurricanes and storm surges.
People feel relaxed while watching the sand dunes.
At sunset, seagulls flying over the sand dunes give mental comfort to visitors, and the location is recognized as one of the eight most beautiful scenic spots in Teaan.
The DuWoong wetland is designated a National Treasure of South Korea by the Cultural Heritage Administration of Korea and also as an Ecosystem Preserved Area by the Ministry of Maritime Affairs and Fisheries.