The Perimeter Watchtower Melkor is a Layil Empire military installation which appears in STAGE - II.A of Sine Mora. As its name suggests, the Melkor is positioned on the perimeter of the Bokumono Undersea Prison Facility. Myryan Magusa attacks the watchtower in order to create a diversion while Ronotra Koss infiltrates the prison itself via an underwater service tunnel. After Myryan destroys its defences and central support column, the Melkor spirals down into the depths below and crashes into the seabed.

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