Hermit Spring is a temple located in the north east part of the Sacred Land of Korin. It appears in Dragon Ball Z: Attack of the Saiyans.
In this temple/cave, there is the spring water that Korin uses to grow the Senzu Beans. In the game, the Senzu plant dries up, so Korin sends Krillin, Yamcha and Tien Shinhan to retrieve the water. There, they fight the Spring Guardian and the Spring Majin. Other enemies encountered here in Attack of the Saiyans are Vampire Bat, Spring Guard, Fishman, Giant Crab, Giant Fish, and Blue Hawk.
In both Dragon Ball: Origins 2 and Dragon Ball: Revenge of King Piccolo, a temple similar to the Hermit Spring is located in the Sacred Land of Korin.
The ruins in Dragon Ball: Origins 2
The pyramid in Dragon Ball: Origins 2
Krillin inside the pyramid
Krillin encounter a T-Rex
Near the Hermit Spring in Attack of the Saiyans
Hermit's Spring in Attack of the Saiyans