we call it khataye basere. I remember there was a humor in tehran that there is a street that if you go there your car would move upward not downward. So my father and I and maybe other member of our family went there. and we tested it and it happened. then my father noticed this pile of dirt next to the strreet na dwe figured its the fault of the eyes9khataye basere, THIS PICTURE REMIDED ME OF THAT...HAMIN.LOL.