An amazingly wonderful cave in Korea, 'Gwangmyeong Cave'

It used to be a mining district where minerals such as gold, silver, copper, and zinc were mined from 1912 during the Japanese colonial period, but the mine was closed due to a great flood in 1972.

Behind the closed mine, it was used as a storage for salted shrimp, and was opened as a public space in 2010.