Yongyeon Cave

용연동굴

A limestone cave at 920 m altitude

Address

Yongyeon Cave, Taebaek-ro, Taebaek

The entrance sits near 920 m below Geumdaebong, and the limestone cave stays around 10 degrees inside, so bring a layer even in summer. Hard hats are required at the entrance. A good plan B on a rainy hiking day.