This is actually the fourth desktop background LS made. The first was a simple box, and the second one only had one door on the right, and two on the left. This is supposed to be a depiction of one of the corridors inside the Nemesis. It's the redesigned version of the third one, with silver shading added to the walls. There are two icons made for this desktop. There's small metal-tone squares for the left side, with slanted edges to match the walls, and also a set for the right side.