Greenland was the largest island on Earth. During the 2012 apocalypse, a massive earthquake of a unknown magnitude hit Greenland killing thousands of humans living in the country. During the 2012 Tsunamis, a gigantic tsunami of 1500 meters swept away Greenland making it uninhabitable. It remained flooded for 27 days until it rose above the sea level when the floodwaters began to recede, and became habitable.
- Greenland on wikipedia