In New Zealand there is the village of Moeraki, it is known that on the beach scattered large stone boulders normal shape. That is a miracle of nature! There are many theories about the origin of these stones: from the fantastic to the earthly. Indigenous peoples, believes the stones of potatoes, poured out of the mythical canoe. Some tourists who have the imagination to see the stone remains of aircraft aliens. Science refers to the Moeraki boulders, geological formation, which is called zheodan – a closed cavity in any of sedimentary or volcanic rocks. Moeraki arose as a result of cementation of porous fine-grained sediments (clay or sand). The age of these formations millions of years old.