Studies suggest that the pinnacles were formed about 60 million years ago during the Paleogene Period. Weathering and earthquakes then shaped them into their present shape.

Beside the Pindos Mountains, at the western region of the Thessaly plain in the middle of northern Greece, these sandstone rocks rise from the ground. The rocks are composed of a mixture of sandstone and conglomerate. They were formed about 60 million years ago. A series of earth movements pushed the seabed upwards, creating a high plateau and causing many fault lines to appear in the thick layer of sandstone.


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