I grew up in New Mexico and was always very into the outdoors, hiking, camping, rock climbing, etc. One summer when I was 19 I went on a 4 day/3 night camping trip near my parents' house on my own. Might sound weird but I had been to this area many times and it was quite safe. Anyway I brought my camera and took lots of pictures. When I came back and developed my film, there were 3 extra pictures that I didn't take... of me... sleeping. One each night.
None of my stuff was missing or stolen and nothing happened, but it freaked the hell out of me.