Niels Peter Høeg Hagen (15 October 1877 – 15 November 1907[1]) was a Danish military officer, polar explorer and cartographer.
[2] Høeg Hagen, together with expedition leader Ludvig Mylius-Erichsen and the Greenlander Jørgen Brønlund, was part of the team of dogsleds that aimed to explore the Independence Fjord area from the east.
Misled by existing maps, the three men prolonged their journey to such an extent that a return to the ship at Danmarkshavn that spring was impossible.
Finally in September they were able to start their return journey on the new frozen sea ice along the coast, but when they arrived at the southern shore of Mallemuk Mountain, they found open water and were forced to travel inland.
The last to die was Brønlund, his body, together with his diary and Hagen's cartographic sketches were found next spring by Johan Peter Koch in Lambert Land.