Since 2011, it has been open to the public as a tourist attraction, with amenities like a theme park, aquarium, and winery available inside.

[1] The cave was created during the Japanese colonial period and was a site of forced labor.

Eventually, due to floods and polluted rice paddies nearby, the mine was made to close.

Then, the Gwangmyeong city government purchased the land and made it into a theme park.

It now has historical exhibits, but is chiefly entertainment-focused, with aquariums, sculptures, light shows, children's amusements, and other attractions, including an underground winery.