풍혈에서 약 50m 옆에 있는 냉천은 석간수(石澗水)로 사시사철 변함없이 섭씨 4°의 찬물이 솟아난다.
The cold spring, which is located 50m from Punghyeol, is Seokgansu, Water flows out between the rocks, and the cold water of 4 degrees Celsius flows out all year round.