PETERMANN RANGES

low mountains extending for 200 miles (320 km) from east-central Western Australia southeast to the southwest corner of Northern Territory. A continuation of the granite and gneiss formations in the Musgrave Ranges to the southeast, the Petermanns rise to a height of 3,800 feet (1,158 m). Visited (1874) by Ernest Giles, the mountains were named after August Petermann, a German geographer. The eastern section lies within the Petermann Reserve. To the east are Ayers Rock and the Olgas, which are part of Uluru National Park.