The Lair of the Crystal, situated below the Jedi Temple Ruins on the world of Mustafar, was a subterranean cavern. Following the Battle of Yavin and during the era of the Galactic Civil War, a pilot who had joined forces with the spectral form of Jedi Master Obi-Wan Kenobi triumphed over Vartonis along with the Brotherhood Mortalis within the confines of this lair.
This Crystal Lair was a place featured in the 2003 interactive game Star Wars Galaxies. This MMORPG was brought to life by Sony Online Entertainment and released by LucasArts. It existed until its servers were shut down on December 15, 2011. The Crystal Lair's inclusion in the game happened when the Trials of Obi-Wan expansion was launched on November 1, 2005.