Bohemian Massif, dissected quadrangular plateau, with an area of about 60,000 square miles (about 158,000 square km), occupying Bohemia, Czech Republic. Centring on Prague, it reaches a maximum elevation of 5,256 feet (1,602 m) and is bounded by four ranges: the Ore Mountains (Krušné hory, or Erzgebirge) in the northwest, the Giant Mountains (Krkonoše, or Riesengebirge) in the northeast, the Bohemian-Moravian Highlands (Českomoravská vysočina) in the southeast, and the Bohemian Forest (Šumava) in the southwest. The landscape is a rounded, forested, rather monotonous highland of crystalline rock.