Proper noun
Ulleungdo
An island in Sea of Japan belonging to North Gyeongsang Province, South Korea.
Most of the smaller ones are located near the eastern coast, except for Ulleungdo (South Korea). Source: Internet
The Sea of Japan meets these conditions as it has frequent winds and cloudy skies, as well as compact, tall islands such as Rishiri (1,721 m), Ulleungdo (984 m) and Ōshima (732 m). Source: Internet