Surrounded by the picturesque forests of Alsace sprawls a sinister leftover of the Nazi occupation of France, the Natzweiler-Struthof concentration camp. Prior to the arrival of Nazi occupying forces, this area was commonly used by local Alsatian people as a popular spot for picnics during summer and in winter such activities as skiing and sledging, however, the German invasion of France put an end to all that. The geology of the area had been identified as being of great strategic interest to the Nazis even before their invasion of France, due…