Built by Magneto within the bowels of an active volcano a few miles from the Savage Land. It was a complex that was one mile deep underground and covered 5 square miles, one of a number of similar bases that Magneto has around the world. The only access was via the mouth of the volcano thru the lava which could only be held back by Magneto himself, making the base virtually impenetrable. Magneto brought the X-Men to the base as captives, and when they got loose and defeated Magneto, the lava flooded into the base during the battle and destroyed the installation.
- 4 appearance(s) of Antarctic Subterranean Base (Magneto)
- 1 image(s) of Antarctic Subterranean Base (Magneto)