STEVE ALLEN / SCIENCE PHOTO LIBRARY STEVE ALLEN / SCIENCE PHOTO LIBRARY
Coastal erosion. Heavily eroded sedimentary rock cliff, called Window Rock, with a large hole at lower centre. This hole was caused by constant wave action from the sea, wearing away the rock. The layers in the rock are at an abnormal angle because seismic activity (Earth vibrations) has caused the rock to shift. Photographed near Hartland Point, Devon, UK.
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