Schneeberg

The Schneeberg, with its 2,076-metre high summit Klosterwappen, is the highest mountain of Lower Austria, and the easternmost and northernmost mountain in the Alps to exceed 2000 m. It is a distinctive limestone massif with steep slopes on three sides.

The Schneeberg is one of the Northern Calcareous Alps in the borderland between Lower Austria and Styria, in the eastern part of Austria. It and the Rax, some 13 km to the south-west, are collectively considered the Viennese Hausberge. The rich Karst plateaux have provided drinking water for Vienna, via a 120 km long pipeline, since 1873, and is claimed to be the best drinking water in the world.

Source: Wikipedia