With your back to the Terrace of the Celestial Worlds, turn immediately to your left, and immediately after, amid the dense vegetation, you will find a narrow path to the left that goes down. It is a winding, narrow path and the terrain is not easy – so be careful! Take this path down until, at the bottom, you will find a bifurcation: ignore the path that opens up in front of you – take the left and keep going down. It will take you to a small cave that you have to cross to the other side, with some steep steps. You will see the lake on the other side with a rocky bridge going over it. Cross it and go stand in front of the maze of caves that you find to your right – those are the caves that connect the Waterfall to the Initiation Well!