4. Naked in the cave was not Kit Harrington (Jon Snow)
Remember the episode in which John Snow and Igritt retire in a cave? A bare ass Snow? So, at the time of shooting this scene Keith Harrington injured his ankle and asked to find an understudy. The shooting team found a man, like Harrington, though, he had to cut his long hair under the hair of the hero and expose you. But what a scene out!