Ghost in a Tree Source/credit: Liz Steward What am I looking at? Believe what you want, but this is a good example of pareidolia. The gaps in the tree behind this odd couple look like a ghost. The eeriness of seeing a ghost in a tree is completed by the greenish hue of the old photo. More optical illusions:Missing pixelsFight against Cervical CancerFlying F1 CarSmile!Camouflaged kittyHeadless WomanSand BearGoblin spy on a plane