The Denmark expedition (Danish: Danmark-ekspeditionen), also known as the Denmark Expedition to Greenland's Northeast Coast and the Danmark Expedition after the ship's name, was an expedition to northeastern Greenland in 1906–1908.
Despite being overshadowed by the deaths under tragic circumstances of three of the expedition's leading members (Ludvig Mylius-Erichsen (1872–1907), Niels Peter Høeg Hagen (1877–1907), and Jørgen Brønlund (1877–1907)), the Denmark expedition was not a failure. It achieved its main cartographic objectives and succeeded in exploring the vast region, drawing accurate charts of formerly unexplored coastlines and fjords, naming numerous geographic features, and gathering a wealth of scientific data.[1]