Gumunso is a natural site in Dongjeom-dong, Taebaek, where Hwangji Stream and Cheoram Stream cut through rock. Water flows between the cliffs where the two streams meet, and two round tunnels are visible on the road side and the valley side. From Cheoram Station it is a 5-minute bus ride, and the tunnel is visible as soon as you get off, so seeing it and taking photos takes 10 minutes. It is small in scale as a destination to travel to.