Pareidolia is the phenomenon of perceiving familiar patterns, especially faces, in random or inanimate objects. For example, in this image of Roland's Breach in the Pyrenees, I see a face (I marked it by a yellow circle) with a pair of eyes, hooked nose, and taunt lips. Maybe I see Roland himself, the famous knight that was immortalised in the 'Song of Roland', the oldest surviving major work of French literature?