One soul well is added by Castle Volkihar Redux. The teleportation spells and all of the internal teleport pads return the user to the soul well.
The soul well is located in the center of Teleport Tower West.
The soul well does not work as a teleporter. It does nothing and cannot be interacted with. It functions as a destination marker for all of the teleport pads found throughout the various wings of Caslte Volkihar. It is also the destination marker for the spell Teleport to Castle Volkihar.