dolmen of table type called dosan-ri of the city of gochang at gochang-gun dolmens site south korea

age asia asian blue bronze capstone colorful dolmen dolmens dosan empty era ganghwa gochang goindol gun heritage hwasun iconic korea korean landmark landscape maesan megalithic monument neolithic nobody park period ri rock rok scenery scenic sign site sky south stone symbol table tomb tombstone travel type unesco world