Keywords: Adolf Hoel Svalbard 1906 NP IMG 2687.JPG en Norwegian explorer Adolf Hoel right Svalbard Photo by Norwegian Institute for Svalbard and Ice Sea Exploration NSIU 1906 Property Rights expired Norwegian Institute for Svalbard and Ice Sea Exploration NSIU author 1906 Public Domain Several PD-old Adolf Hoel Svalbard Explorers from Norway |