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These beautiful boulders are between the low tide and the clay bank on the KoeKohe beach in Otago New Zealand.
It was a really dull day with rain and low light so I have enhanced the picture to try and compensate.
These are a tourist attraction and as I approached from about a kilometer down the beach there were at least 20 Japanese visitors milling around them and I was convinced it was a ruined expedition. But as luck would have it they all decided to move off in one large bunch and I was left alone...yes!
Formed over some 5 million years from Mud, Silt, Clay and all stuck together with Calcite they seem to have tumbled out of the clay bank and on to the beach.