Austria was a country in Europe.
During the 2012 apocalypse, Austria was hit by massive earthquakes which causes landslides, destroying various cities and killing several people living in the country. Volcanoes erupted in the European country and it engulfed serveral parts of Austria. The remains of the ruined Austria were then swept by a megatsunami at the height of 1500 meters in the Worldwide Flooding.
As a result of the apocalypse, Austria is left with extreme damage and is submerged underwater. However, when the global floodwaters started to recede, Austria had presumably risen along with some parts of Europe.