SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY
Carboniferous limestone outcrops. Limestone outcrops showing strata (layers, horizontal banding) of rock that were laid down between 363 and 325 million years ago, during the Dinantian epoch of the Carboniferous period. Photographed at the western end of the Gower Peninsula, Wales, UK.
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