MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Granite tor. View of a rockform where erosion and weathering has created a stack of tiers of rock. The action of frost has subsequently caused it to split through freeze-thaw. Photographed at Stowe's Hill, Bodmin Moor, Cornwall, UK.
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