Yongdae Gap

Yongdae Gap (,, "Dragon-Terrace Cape") is a North Korean headland in the middle of the country's eastern coast along the Sea of Japan. It forms the southeastern corner of South Hamgyong's Tanchon and the western point of a narrow bay sheltering Songjin and Hwadae.

Names
In the 19th century, Yongdae Gap was known as Cape Schlippenbach or Schlippenback. During the Japanese occupation of Korea, it was known as Ryūdai-kō.

Geography
Yongdae Gap is the southern point of a small peninsula whose most conspicuous summit is Wonsandok San, which rises to an elevation of 504 m about 4 mi due north of the cape. The highest visible mountain from the point is Yongyon San(용연-산, 龍淵山), which rises to an elevation of 1598 m about 17 mi farther NNW. Its range extends 25 mi north from the cape.

A half-mile (.8 km) to the west of the peninsula is Yongdae Myoji ("Yongdae Anchorage"). This has a depth of 9.1 - 13 m and bottom in fine sand, but is unsafe except as a shelter from NE winds.

To the east of Yongdae Gap is a narrow but long and deep bay extending about 40 mi east to Musu Point.

Lighthouse
Yongdae Gap has a lighthouse, but it is closed to the public and the American National Geospatial-Intelligence Agency notes that "the existence and operation of all navigational aids should be considered unreliable on the east coast of North Korea".