Punakaiki, West Coast, New Zealand
The Pancake Rocks that Punakaiki is famous for, are limestone formations that began forming 30 million years ago, when lime-rich fragments of dead marine creatures were deposited on the seabed, then overlaid by weaker layers of soft mud and clay. The seabed was raised above sealevel by earthquakes to form the coastal cliffs and coastline. The sea, wind and rain have since etched out the soft layers to form the unusual rock formations we see today.
photo id: JAB_20160110_7DMII_7575-Edit1