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
Cadillac Mountain October 7 through March 6. For a few weeks around the equinoxes, the sun rises first at West Quoddy Head in Lubec, Maine. During the remainder of spring and throughout summer, the sun rises first on Mars Hill, to the northeast. Cadillac Mountain Cadillac Mountain is located on Mount Desert Island, within Acadia National Park. With an elevation of 1,530 feet (466 meters), its summit is the highest point in Hancock County and the highest within of the shoreline of the North American continent between the Cape Breton Highlands, Nova Scotia and Mexican peaks south of the Texas border. It