Ilum/Legends

Ilum was the ice planet home to many of the Adegan crystals used in the construction of Jedi lightsabers. The caverns containing the crystals were long ago turned into a Jedi temple.

As part of his training, Anakin Skywalker, along with his mentor and friend Obi-Wan Kenobi, traveled to Ilum so that Anakin could build his first lightsaber. The two faced multiple challenges in scaling the slopes that lead up to the cave, including running into a nest of Gundarks. Upon entering the cave, Anakin first faced Darth Maul's ghost before finally completing his lightsaber.

In 22 BBY, it was the location of the Battle of Ilum. After the fall of the Old Republic, the Galactic Empire established a base on the planet to intercept any Jedi who might return for lightsaber crystals.

After the Great Jedi Purge, Obi-Wan Kenobi received intelligence that his friend, Jedi Master Garen Muln, had returned to Ilum to hide in the crystal caves. Ferus Olin, a former Jedi apprentice, returned to the caves to retrieve crystals to build a new lightsaber. He found them as well as Garen. The Jedi had grown weak. He gave Ferus his old lightsaber, which needed new crystals. Ferus inserted his crystals and carried the weak Jedi Master out of the caves. Obi-Wan arrived in a ship before the Imperials could take them hostage.

Another Jedi also took refuge there: Fy-Tor-Ana. However, according to Garen, she returned to Coruscant to see if any other Jedi had survived. She did not return, but it was rumored that she was imprisoned on Coruscant.

Appearances

 * Jedi Quest: Path to Truth
 * Star Wars: Clone Wars
 * Chapter 14
 * Chapter 15
 * Chapter 16
 * The Last of the Jedi: Dark Warning