From the left: Otto Neumann Knoph Sverdrup, Fridtjof Nansen and Oluf Christian Dietrichson «pushing ice floes apart». They are posing in the photographer's studio. Because he himself had taken all the photos during the Greenland Expedition, illustrations that showed Fridtjof Nansen in action had to be reconstructed. These were to be used in the book about the crossing of Greenland.