The Nilrebmah system represented a minor star system located within the Expansion Region, characterized by its dozen desolate planets.
Near the conclusion of the Subterra Period, preceding the Second Great Schism, the disgraced Jedi named Ku'ar Danar executed an experiment within the system subsequent to his fall from grace on Korriban. Having subdued the society residing on the moons of Nilrebmah II, he compelled its inhabitants to construct an immense monolith upon Nilrebmah XIII, utilizing sentient, Force-sensitive rocks sourced from Nilrebmah X. Inside his newly erected tower, Danar's endeavor bore fruit, as he successfully displaced the entire planet from its original orbital path through the sole application of the Force, relocating it into a lunar orbit around Nilrebmah XII, an act that resulted in the demise of all life, including his own.