There’s a shadow creeping across the forest in the works of JRR Tolkien. Nature may be incorruptible but the creatures of the forest cannot withstand the relentless march of evil. Slowly but surely the songbirds are replaced by giant spiders, black squirrels and rampaging goblins. Eleanor Rosamund Barraclough is joined by Mark Atherton from Oxford University for a walk through Tolkien’s forest, uncovering the influence of Anglo-Saxon legends and Middle English poems in the creation of Middle Earth.