Kahn's Kave, also referred to as Shao Kahn's Kave, The Cave, or The Kave, is a secret subterranean throne room located inside Shao Kahn's Fortress and is where Shao Kahn originally attempted to steal the souls from the Netherrealm but failed when Ashrah slew most of his allies.
Kahn's Kave is above a large cavern in the Netherrealm, namely Scorpion's Lair. In Scorpion's Lair, if an opponent is hit with an uppercut during a round, they are sent into The Kave.
In the N64 version of Mortal Kombat Trilogy, this stage is "enhanced." The floor's glow is now animated and there are moving clouds in the background.