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Ocean of Storms, Moon
Hidden Swarm Nightmares
Sorrow's Harbor Admittance
The Enduring Abyss is a massive cavern fed by a network of dark tunnels hidden away underneath the Scarlet Keep, where it houses the Pyramid from which the Hive superstructure derives its power and from which Nightmares are created.
Hive structure overlooking the Enduring Abyss, often occupied by Eris Morn.