20 천동자연관찰로 20 Cheondong Nature Observation Course 579.79 0 YES "수서생물, 양서류, 다래덩굴, 화전 등" Cheondong Nature Observation Course 천동자연관찰로 4.06 7.91 8.9 25 8 160105020016 RDF description of Cheondong Nature Observation Course