Asteroid M had crashed down to Earth, and had seemingly been forgotten. However, the X-Men's specialist science team known as the X-Club located the remains of Asteroid M underwater in San Francisco Bay. Working in submarines and scuba apparatus they managed to repair the life support systems and turned the asteroid's technology into reclamation hardware. The asteroid was rocketed from the floor of San Francisco Bay up to the surface where it became an island in the middle of the bay.
