Mount Bruce, mountain in the Hamersley Range, northwestern Western Australia, southwest of Wittenoom Gorge. The second highest peak in the state, it rises to 4,052 feet (1,235 metres) and constitutes one of the main attractions of Karijini National Park. Known to the Aborigines as Punurrunha or Bunurrunha, it was first seen by a European, Francis T. Gregory, in 1861, who named it for Lieut. Col. John Bruce, commandant of Western Australian troops. Mount Meharry (4,111 feet [1,253 metres]), the highest point in Western Australia, lies about 40 miles (64 km) to the southeast of Mount Bruce.