What does UK's bird protection society have in common with the railways? They're both building the largest artificial nature reserve of its type in Europe.Eight gigantic drilling machines have been tunneling through sand and gravel 30 meters under London for months, working on a huge project to create a new rail service for the city and its outlying suburbs. At the request of the Royal Society for the Protection of Birds, the excavated earth is ending up on Wallasea Island, on the Essex coast, which is being transformed to recreate its ancient landscape of salt-water mud flats and marshland, in order to protect the coast from flooding and replace natural tidal habitats. It's already proving a haven for tens of thousands of rare water birds.
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Producer : Deutsche Welle