The Pancake Rocks at Dolomite Point near Punakaiki are where the sea bursts through several vertical blowholes. The foundations of the rocks were formed 30 million years ago when minute fragments of dead marine creatures and plants landed on the seabed about 2 km below the surface. Immense water pressure caused them to solidify into layers of more resistant limestone and softer, thin, mud-rich layers. Over the course of time seismic action lifted the limestone above the seabed where water, wind and salt spray eroded the softer layers leaving a "pancake" like stack of harder limestone.

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