Distant, frozen and dangerous, Ilum has nonetheless attracted Jedi visitors for centuries. The vast crystal caves beneath Ilum's surface draw those seeking to improve their weapons, meditate in seclusion or test themselves against the natural hazards there.
One pilgrimage to Ilum nearly ended in disaster when Master Seta-Le, trekking through Ilum's mountains to a meditation site, fell through a patch of ice into a cavern. Trapped and with her lightsaber broken in the fall, she eventually managed to apply the lightsaber's components to a nearby crystal formation. The resulting scattered beam melted through the ice wall of the cavern, allowing Master Seta-Le to escape. The complex, fragile ice formations created from the beam have become another point of interest on Ilum for Jedi pilgrims.