The Hidden Cave resided within the Nightsister lair, serving as the dwelling place of Old Daka. She was the one who invoked the Army of the Dead with the intent to destroy the Separatist Droid Army that had launched an assault on Dathomir. Typically, access to the cave was restricted to those who used magick. However, during the conflict, a commando droid utilized a rocket launcher to create a rupture in its structure. The annihilation of the cave's entry point enabled General Grievous to murder Daka, thus interrupting Mother Talzin's voodoo torture aimed at Count Dooku.