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 Elbrus Elbrus should not be confused with the Alborz (also called Elburz) mountains in Iran, which also derive their name from the legendary mountain Harā Bərəzaitī in Persian mythology. In 1997 a team led by the Russian mountaineer Alexander Abramov took a Land Rover Defender to the summit of the East Peak, breaking into the Guinness Book of Records. The project took 45 days in total. They were able to drive the vehicle as high as the mountain huts at The Barrels (), but above this they used a pulley system to raise it most of the way. On the way