The Yong'an Salt Pan Wetland (Yong'an Yantiancyu), characterizes by huge mangrove coverage and rich wildlife, is a major wetland in Taiwan. The approximately 130 hectares wetland was once called the Dark Forest (Wusulin) Salt Pan and was an important one on the island before it was purchased by the Taiwan Power Company for coal ash residue-depositing land in 1984. However the plan did not work out, and the land was soon left uncared for. As a result, natural mangrove started developing, attracting over 110 species of birds into the region including peregrine falcons, Kentish plover, and others. It is enlisted important wetland at local level in 1997.