Darkmine was the First temple to Ak'Rei'An to be established on Terros-Nui, and is located under Onu-Terros. It is the only base where Ak'Rei'An can physically manifest, due to Ancient, Mysterious glyphs carved into the walls of the temple. The walls of the cavern are made of Purple Lightstone, amplifying the power of BoD members. It is hidden from all seekers, except BoD members, by a Mask of Shadows obtained by Verak Sunslayer Darkmine is currently held by the Cult of Ak'Rei'An