Three Selyan Shrines generate in the Ancient Cavern. Two generate in the main room, and one generates within Coniferon's chamber.
The Selyan Shrine has two functions based on its position within the Ancient Cavern. If used outside of the Ancient Cavern, the Selyan Shrine does nothing.
When interacted with, the Selyan Shrine in Coniferon's chamber will teleport the player back to the main room. This will also remove 20 Selyan tribute points from the player.