Gwaneumgul Cave (Daei-ri Cave Caverns) (관음굴(삼척 대이리 동굴지대))

Gwaneumgul Cave has a reputation of being a must-explore cave by not only Korean scientists but throughout cave academia around the world. The entrance of the cave is 4.2 meters wide, 3 meters high and 1.6 kilometers deep. The underground water flows from the entrance all the way to end all year long producing approximately 15,000 ㎥ per day. The cave also has 4 waterfalls along the way with the largest being 9 meters high. The cave is full of stalactites and stalagmites, as well as straw soda, columns, flowstones, cave corals, aragonite crystals and more. The cave has a total of 24 different types of living organisms, making a desirable cave for academic research.