Meldon Reservoir Dam with Sluice gates closed on sunny summer day, Dartmoor National Park

meldon reservoir dam meldon reservoir sluice gate closed sunny summer day dartmoor dartmoor national park national park devon industrial heritage countryside nature steep okement valley granite way water dam water supply concrete man made water flowing barrier wall architecture building control engineering no people nobody force common gorse shrub grass sky hills release protection brown trout ecology preservation wide shot landscape outdoors