The most used hall in the underground complex is the south hall. All three elevators leading to the upper floors can be found here, as well as doors leading to the X-Men Infirmary and X-Men Recovery Room on the east side and the X-Men Lab and X-Men Armory on the west side. The all important X-Men Danger Room doors are on the southernmost wall. Metal lines the walls, with fluorescent lighting taking up the ceiling. The area is sterile and kept clean, everything shining and all the high tech equipment hidden in the walls.