The Mysterious Moeraki Boulders:
The Moeraki Boulders are unusually large and spherical boulders lying along a stretch of Koekohe Beach on the wave cut Otago coast of New Zealand between Moeraki and Hampden. The most striking aspect of the boulders is their unusually large size and highly spherical shape, with a distinct bimodal size distribution. Moeraki Boulders are concretions created by the cementation of the Paleocene mudstone of the Moeraki Formation, from which they have been exhumed by coastal erosion.
