Madison was the capital city of Wisconsin.
During the 2012 apocalypse, Madison was hit by massive earthquakes, destroying many of its buildings and landmarks, killing numerous people. The Yellowstone Ash cloud spread around the United States and Canada, before it engulfed Madison. The ruined Madison was then swept by a megatsunami at the height of 1500 meters in the Worldwide Flooding.
After the apocalypse ended, Madison and the rest of Wisconsin is now the new position for the South Pole, left with extreme damage and is rendered uninhabitable.