The Valley of the Moon (Argentina)  Ischigualasto, meaning “the place where you put the moon” is a remote valley in Argentina. It is studded with geological formations left by wind erosion, amazing standing stones and boulders that are so rounded they look like enormous marbles. The valley&#39;s once-fertile ground is now arid and contains so many plant and animal fossils that paleontologists come from all over the world to study them