Osterzgebirge
The Ore Mountains are oriented in a southwest–northeast direction and are about 150 km long and, on average, about 40 km wide. From a geomorphological perspective the range is divided into the Western, Central and Eastern Ore Mountains, separated by the valleys of the Schwarzwasser and Zwickauer Mulde and the Flöha ("Flöha Line"), the division of the western section along the River Schwarzwasser is of a more recent date. The Eastern Ore Mountains mainly comprise large, gently climbing plateaux, in contrast with the steeper and higher-lying western and central areas, and are dissected by river valleys that frequently change direction. The crest of the mountains themselves forms, in all three regions, a succession of plateaux and individual peaks.