The Protodermis Falls was a waterfall of Liquid Protodermis located in Ga-Metru. Following the collapse of the Great Spirit Robot, it is possible that the Protodermis stopped flowing and the falls ran dry. 

Ga-Metru (v|e)
Great TempleVhisola's HomeProtodermis LabsGa-Metru Schools
Ga-Metru DocksProtodermis FallsMatoran Recharge Center
Fountains of Wisdom
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