Eyewitness: Aizhai suspension bridge, Hunan, China
The world's longest tunnel-to-tunnel suspension bridge has opened in China. Construction of the Aizhai extra large suspension bridge, which carries traffic 355m above the valley floor, took over four years. Designed to ease congestion in the mountainous region, it will cut the time needed to traverse the canyon from 30 minutes to one Illustration: Photograph: Top Photo Corporation/Rex Features
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