Appears In: Uru: Complete Chronicles, Uru Live
Location: Bahro Cave, Relto
Somehow, the Bahro Pillars are connected with Relto and the Star Fissure. Returning them to the orange Cave will make the outline of the Fissure appear, and removing all four will bring an earthquake to Relto, opening the starry expanse.
Note that when in Relto, the Pillars have a blue-gray mist coming from the top, and glow less often than when in one of the Caves.