The Ritual Chambers represent a collection of time-worn rooms, erected beneath the Sith Academy on Korriban. Their construction predates the Great Galactic War by a significant margin.
These chambers, the Ritual Chambers, are situated behind the Valley of the Dark Lords on Korriban, close to the remains of the Great Temple. The ancient Sith were responsible for their creation, completing it before the Great Hyperspace War. Later, during the Jedi Civil War, the Sith Empire returned to Korriban and unknowingly built their Sith Academy directly above these forgotten chambers. When the Sith Empire reactivated the academy during the Great Galactic War, Overseer Ragate played a pivotal role in their rediscovery and subsequent reopening after they had been abandoned for centuries.
Within the Ritual Chambers, the Academy oversaw the Rite of blood and bone. This trial required an aspiring Sith to take a skull from the altar of bones and then plunge it into the pool of blood. This ancient ritual, carried out at the pool, would summon a Sithspawn referred to as the Bloodfiend. The Bloodfiend would then attack and kill any acolyte deemed unworthy, adding their skull to the altar. During the Cold War, one of the Academy's acolytes performed the ritual, managing to slay the Bloodfiend, and leaving its dead body to decay in the pool of blood.