Nick Upton / Flight of 16 locks up a steep hill on the Kennet and Avon canal, Caen Hill, Devizes, Wiltshire, UK, April 2014.
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Nick Upton / Flight of 16 locks up a steep hill on the Kennet and Avon canal, Caen Hill, Devizes, Wiltshire, UK, April 2014.
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Nick Upton / Flight of 16 locks up a steep hill on the Kennet and Avon canal, Caen Hill, Devizes, Wiltshire, UK, April 2014.
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Nick Upton / Flight of 16 locks up a steep hill on the Kennet and Avon canal, Caen Hill, Devizes, Wiltshire, UK, April 2014.
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Nick Upton / Narrow boats in a lock on the Kennet and Avon canal, Caen Hill, Devizes, Wiltshire, UK, April 2014.
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Franco Banfi / Love locks on a bridge in Irkutsk, Lake Baikal, Siberia, Russia.
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Paul D Stewart / Photograph of Charles Darwin taken by Lock & Whitfield in 1877 and published in' Men of Mark' 1878.
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Paul D Stewart / Woodbury type photo of Sir Joseph Hooker (1817-1912) from 'Men of Mark', by Lock and Whitfield, published 1881 by Sampson Low.
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Nick Upton / Teagen Hill of Westland Countryside Stewards using apple to bait traps set on floating rafts for Water voles (Arvicola amphibius) on the Bude canal to remove them from the bank before some lock repair...
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Scott Leslie / Lock and dam, Port Mayaca, Lake Okeechobee, Florida, primary source of the Everglades
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Staffan Widstrand / Padlocks on the Pont de l'Archeveche bridge and Notre Dame Cathedral, with boat passing, Paris, France, October 2013.
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Loic Poidevin / Locked yellow door, Santorin Island, Greece, May 2009.
