There are a lot of land-based s in Korea, but with the exception of a single, they are not readily available to citizens of the nation. http://gitea.anomalistdesign.com/audreabolt7318/powerball-perceptive/wiki/%ED%8C%8C%EC%9B%8C%EB%B3%BC%EA%B3%B5%EB%9E%B5%3A-%EC%B5%9C%EB%8C%80%ED%95%9C%EC%9D%98-%EA%B0%80%EB%8A%A5%EC%84%B1%EC%9D%84-%ED%83%90%EC%83%89%ED%95%98%EB%8A%94-%EC%A0%84%EB%9E%B5