In the late 19th century a former Edinburgh rail tunnel became the site of a major mushroom cultivation industry in what might just be the most curious ever example of a disused structure being given a new lease of life.
Situated 50 feet below the New Town and completed in 1847, the kilometre-long Scotland Street Tunnel is a remarkable piece of Victorian railway engineering and yet it only operated for the purpose for which it was created for a total of 21 years before being abandoned.
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