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 Coot-tha, Queensland Mount Coot-tha, Queensland Mount Coot-Tha is a mountain and a suburb in the City of Brisbane, Queensland, Australia. In the , there were no residents in the suburb. The mountain is 287 metres above sea level, has the highest peak within the urban footprint of Brisbane. It forms the eastern extent of the Taylor Range and is a prominent landmark approximately to the west of the Brisbane central business district. Visible from much of the city, Mount Coot-tha is a popular bushland tourist destination including the Brisbane Botanic Gardens and Sir Thomas Brisbane Planetarium, as well as a mountain drive,