Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
지적도를 사용하여 이 지역의 지형을 분석할 수 있습니다.jijeokdeureul sayonghayeo i jiyeog-ui jihyeong-eul bunseoghalsu itsseumnida.You can analyze the terrain of this area using a topographic map.