The Bohemian Massif (Czech: Česká vysočina or Český masiv, German: Böhmische Masse or Böhmisches Massiv) is a geomorphological province in Central Europe. It is a large massif stretching over most of the Czech Republic, eastern Germany, southern Poland and northern Austria.
The massif encompasses a number of mittelgebirges and consists of crystalline rocks, which are older than the Permian (more than 300 million years old) and therefore deformed during the Variscan Orogeny.
Parts of the Sudetes within the Bohemian Massif, Giant Mountains in particular, stand out from the ordinary mittelgebirge pattern by having up to four distinct levels of altitudinal zonation, glacial cirques, small periglacial landforms and an elevation significantly above the timber line.[1]