The first train enters the Gotthard rail tunnel, the longest tunnel in the world
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World's longest rail tunnel opens in Switzerland

1 June 2016 Last updated at 15:09 BST

The world's longest and deepest rail tunnel has been officially opened in Switzerland after nearly two decades of construction work.

The Gotthard tunnel is 57 km (35 miles) long and is designed to provide a high-speed rail link from Rotterdam in the Netherlands to Genoa in Italy.

Imogen Foulkes reports.

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