Floating rocks

Robyn Miller has been following the odd phenomenon of floating rocks.

“Floating rocks are an event rarely captured on film. Very little is known about them, other than they float only for a short time, sometimes only minutes, before slowly returning to the ground.”

floating-rocks

What do you think? Is the phenomenon real? Or is it a clever Photoshop fake… or an optical illusion?

[Via Boing Boing]