This is a list of the extreme points of North America: the points that are highest and lowest, and farther north, south, east or west than any other location on the continent. Some of these points are debatable, given the varying definitions of North America. North America and surrounding islands Northernmost point — Kaffeklubben Island, Greenland . Although politically part of the Kingdom of Denmark, Greenland is geologically part of the North American plate. If non-permanent islands are included, then the northernmost point is Qeqertaq Avannarleq. If Greenland is excluded from North America, the northernmost point is Cape Columbia, Ellesmere Island, Nunavut, Canada . Southernmost point — Cocos Island, Costa Rica Westernmost point — The westernmost point depends on the definition of "westernmost". If following the International Date Line, it would be Cape Wrangell on Attu Island, Alaska, United States , or the tiny (ca. 200m diameter) Peaked Island, just off the coast to the west. However, if the border between east and west is defined by the 180th meridian, the westernmost point is the West Point of Amatignak Island , as Attu Island is in the Eastern Hemisphere. Easternmost point — Nordostrundingen, Greenland . If Greenland is excluded, then the easternmost point is Cape Spear, Newfoundland, Canada . Again, if one uses the technical definition of longitude, it is Pochnoi Point on Semisopochnoi Island, Alaska, since the state stretches into the Eastern Hemisphere. However, other sources argue it would be Cape Wrangell on Attu Island, Alaska, United States at , as well as the tiny (ca. 200m diameter) Peaked Island, just off the coast to the west. Continental North America Northernmost point — Murchison Promontory, Canada 71°58′N 94°57′W Southernmost point — Punta Mariato, Panama Westernmost point — Cape Prince of Wales, Alaska Easternmost point — Cape Saint Charles, Labrador Highest points Denali (Mount McKinley), Alaska, United States — highest summit of North America at . Pico de Orizaba (Volcán Citlaltépetl), Puebla and Veracruz, Mexico — highest volcano summit of North America at . Grays Peak, Colorado, United States — highest point on the Continental Divide of North America at . Volcán Tajumulco, San Marcos, Guatemala — highest summit of Central America at . Gunnbjørn Fjeld, Sermersooq, Island of Greenland, Greenland — highest island summit of the Americas and highest summit of the entire Arctic at . Pico Duarte, Dominican Republic, Hispaniola — highest summit of the Caribbean at .