[Olorin_TLA]

The Pillar of Illuin was one of two huuuuge mountains in the world on top oif which Lamps made by the Valar (basically gods) were palced, and so the world had light. Unfortuantely, Melkor (also known later by the Elves as Morgoth, the Black Enemy) tore down the pillars (mountains) and cast down the lmaps, plunging the world into darkness and almost physically destorying it as well.