A 60 million year old giant ball shaped boulder on the beach at Moeraki South Island New Zealand Stock Photo - Alamy

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Huge spherical boulders 'Moeraki Boulders' on Koekohe Beach are scattered on the Otago coast between Moeraki and Hampden, South Island,NZ Stock Photo - Alamy

These naturally forming spherical boulders found in New Zealand. It is likely that the Moeraki Boulders first formed from the seafloor mud over 56 million years ago in the Paleocene era.

Round rock balls hi-res stock photography and images - Alamy

Nature's Giant Beach Balls at Moeraki - Latitude 65 - Jubilados Savouring the Journey

Spherical rocks hi-res stock photography and images - Alamy

Round boulders beach new zealand hi-res stock photography and images - Alamy

The mysterious Moeraki Boulders of Maori legend that are made from natural concrete and date back 60 MILLION years

Round boulders beach new zealand hi-res stock photography and images - Alamy

The Moeraki Boulders at Koekohe Beach in New Zealand

60 million year old giant ball shaped boulder on the beach at Moeraki South Island New Zealand Stock Photo - Alamy