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Cambridge pair aim to row whole Amazon with no back-up

29 August 2013 Last updated at 13:12 BST

Two men are about to set off on an Amazon adventure without any back-up.

They plan to row the entire 2,077 miles (3342 km) of the river from Peru to Brazil.

Anton Wright and Mark De Rond, from Cambridge, will have no support boat, base camp, medical help or film crew.