Michael Hutchinson / People walking up Haytor granite outcrop) a popular tourist attraction and landmark. Dartmoor National, Park, Devon, UK.

Michael Hutchinson / Granite outcrop on top of Haytor, Dartmoor National Park, Devon, UK.

DAVID TIPLING / 'Cakes of Bread' granite tors, Derwent Edge, Peak District National Park, Derbyshire, UK

David Noton / Widdecome-in-the-moor, Dartmoor National Park, Devon, UK

Graham Eaton / Granite tor showing exfoliation / onion skin weathering, caused by freeze and thaw of water in the rock. This process characterises the Granite Tors of Dartmoor, Merrivale, Dartmoor, Devon, UK. Janua...