The nature park covers the whole territory of the county of Cham and the eastern part of the county of Schwandorf. In the northwest it borders the Upper Palatine Forest Nature Park, in the east, the Czech Republic, and in the south on the Bavarian Forest Nature Park. Its highest summits are the Großer Osser (1,293 m), Hoher Bogen (1,079 m), Kaitersberg (1,133 m), Enzian (1,285 m), Schwarzeck (1,238 m), Zwercheck (1,333 m) and Kleiner Arber (1,384 m). The proportion of forest today is about 40 percent. 76 percent of the nature park territory is protected and 2,084 hectares have been designated as nature reserve.