The Bohemian Forest comprises heavily forested mountains with average heights of 800-1,400 metres. The highest peak is Großer Arber (1,456 m) on the Bavarian side; the highest peak on the Bohemian and Austrian side is the Plöckenstein (Plechý, 1,378 m). The most eastern peak is the Sternstein (1,125 m). The range is one of the oldest in Europe, and its mountains are eroded into round forms with few rocky parts. Typical for the Bohemian Forest are plateaux at about 1,000-1,200 m with relatively harsh climates and many peat bogs.