A runner passes in front of Bamburgh castle in Northumberland, northern England August 23, 2013. Signs of ancient conflict - from centuries-old fortifications to historic battlefields - score the landscape around the English-Scottish border. But many living in the region lead lives straddling both sides, and express practical concerns about the possibility of a more formal split between the two nations in the event of a yes vote in next year's referendum on Scottish independence, which will be held on September 18, 2014. Picture taken August 23, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SOCIETY TRAVEL POLITICS TPX IMAGES OF THE DAY)

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