Gossigul Cave [National Geopark] (고씨굴-강원고생대 국가지질공원)

Gossigul Cave was designated as a Natural Monument on June 4, 1969, getting protection from the government for its educational and natural values. In 1974, the cave was opened to the public. The cave has various levels with underground water flowing on the bottom level. The cave is mostly made of limestone with various microorganisms inhabiting within.