Antarctica of centuries. Several Antarctic ice streams, which account for about 10% of the ice sheet, flow to one of the many Antarctic ice shelves: see ice-sheet dynamics. East Antarctica lies on the Indian Ocean side of the Transantarctic Mountains and comprises Coats Land, Queen Maud Land, Enderby Land, Mac. Robertson Land, Wilkes Land, and Victoria Land. All but a small portion of this region lies within the Eastern Hemisphere. East Antarctica is largely covered by the East Antarctic Ice Sheet. Vinson Massif, the highest peak in Antarctica at , is located in the Ellsworth Mountains. Antarctica contains many other mountains,
Mount Ptolemy (Antarctica) Mount Ptolemy (Antarctica) Mount Ptolemy () is an isolated block mountain with four main summits, the highest rising to 1,370 meters. It lies close north of the Traffic Circle on the northwestern side of Mercator Ice Piedmont, Antarctic Peninsula. First observed by Finn Ronne and Carl Eklund of the U.S. Antarctic Service, 1939–41, from their sledge route through the Traffic Circle. Surveyed by Falkland Islands Dependencies Survey (FIDS) in 1947. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) after Claudius Ptolemy (2nd century AD), Egyptian mathematician, astronomer and geographer, who introduced the system of coordinates of latitude and longitude for