One of Jeju Island's many lighthouses stands against Mount Sanbangsan and Mount Hallasan, a shield volcano, Jeju Island, South Korea, Asia

color image horizontal travel destinations travel jeju island south korea asia no people outdoors sunset dusk copy space cloud sky lighthouse guidance direction mountain coastline water's edge sea water mount sanbangsan mount hallasan volcano nature sea wall tree volcanoes volcanic travel destination tourist destination tourist destinations sundown evening twilight seas ocean oceans outdoor outside nobody no one no person mountains lighthouses assistance guiding navigation nautical tower towers safety warning