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In 2009, beavers were released into the wild in the Knapdale forest on the west coast of Scotland, some 400 years after they were wiped out in the UK. The Scottish Beaver Trial was the first official beaver re-introduction programme in the UK and was considered a landmark conservation project. The beaver is seen as a keystone species which can help shape and restore the environment. Alex Last spoke to Simon Jones, who was then the project manager of the Scottish Beaver Trial. Photo: A beaver in Knapdale in 2011 © Steve Gardner (courtesy of the Scottish Wildlife Trust)