9. The Norwegian Mountain Troll
This photo was taken by a recon aircraft over the Norwegian countryside. While this photo has quickly become a big part of WWII trivia, it would seem that this is a hoax and that the photo is actually a fake from the movie Troll Hunter. There is some convincing evidence, but considering that many report that the image was taken in 1942, it still leaves some room to speculate. Time travel. Has to be time travel.