This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Crossings of Greenland until . en Map of Greenland with routes of crossings until de Karte Grnlands mit den Routen der berquerungen des Inlandeises bis Rasmussen Ultima Thule Grnlndische Reiseerlebnisse Morawe Scheffelt Berlin Knud Rasmussen Maps of Greenland Alfred Wegener Robert Peary Fridtjof Nansen PDold