Owner: Earth Union
Location: Earth, Victoria Land
Add-Ons:
- Unknown
Mobile Suits (???):
- Unknown
Mobile Armors (???):
- Unknown
Defenses:
- Unknown
Occupants:

Situated on a geologically stable portion of the Ross Ice Shelf, the McMurdo base is a former Earth Sphere Alliance defense post and early warning scanning installation intended to provide supplementary military forces and sensor coverage to other bases on the Antarctic continent. It was captured along with most of the Alliance’s other Antarctic bases by the Space Revolutionary Army during the first phases of their terrestrial invasion, and was one of the last facilities abandoned when combat operations on Earth were terminated. After a period of dereliction it was seized by the Guild, who were in turn chased out by the Human Reform League, and the base was finally absorbed into the Earth Union in the early UC 220s.

The base is constructed parallel to a tall glacial formation about four miles from the McMurdo Sound (from which the installation’s name is derived) and has relatively unobstructed line-of-sight to the ocean. An airstrip forms the other long perimeter of the base, with the main structures sandwiched between it and the glacier wall. The command center is placed below the main air traffic control tower at the western terminus of the runway, while mobile suit hangars, a repair bay and refueling center, and a pair of gigantic scanner antennas occupy the bulk of the central area. The eastern end is entirely taken up by the the power plant and other logistical buildings, making for an overall extremely compact installation – the spaces between the buildings are barely wide enough to accommodate trucks, much less mobile suits. Defenses are primarily positioned in a pair of parallel rows, with one occupying the seaward side of the airstrip and another actually placed atop the glacial wall, allowing for overlapping fields of fire. The glacial batteries are capable of firing over, or down into, the base proper in addition to aiming out inland over the glacier itself, while the missile launchers on the outer side of the runway can cover the installation thanks to vertical launch capability. In either case, the defenses are placed in typical Union retractable turrets that are nominally either stored below the base concourse or in hidden positions atop the glacier.