While hiking through a forest in Croatia, a group of teenagers decided to take a memorable photo.

What could be strange about that? Taking pictures during trips is something everyone does, as it’s nice to relive special moments from your adventures when looking back.

However, instead of pleasant nostalgia, these teens experienced real horror when they returned home and noticed a mysterious silhouette in the background of the photo.

All participants claim they didn’t see anyone around, leading them to believe that the figure could have been a stranger with bad intentions, silently watching them from afar.