Seven Third Summits Sumantri () and Ngga Pulu (). The definition of "continent" is a matter of some dispute among mountaineers seeking to complete this challenge. The main ridge of the Greater Caucasus range is generally considered to form the boundary between Europe and Asia. In that case, Mount Elbrus () and Dykh-Tau (), are the two highest mountains in Europe. Excluding the Caucasus Mountains, Mont Blanc () and Monte Rosa () would be Europe's two highest mountains. The Australian continent is defined as comprising the mainland of Australia and proximate islands on the same continental shelf, including Tasmania and New Guinea. In
Mount Dale Mount Dale Mount Dale is a mountain in Western Australia about 25 km east of Armadale in the Shire of Beverley. At 546 m high, it is one of the highest points in the Darling Scarp. It is best known for its walk track, which forms part of the Bibbulmun Track. The track leads from a parking and picnic area to the summit, passing through 500 metres of jarrah forest, which is coloured by a host of wildflowers in spring. South of Mundaring Weir, Mount Dale is visible when looking SSE from Glen Forrest outside Helena College on Bilgoman Road.