Newhaven Tunnel

The Cromford and High Peak Railway (C&HPR) was a standard-gauge line between the Cromford Canal wharf at High Peak Junction and the Peak Forest Canal at Whaley Bridge. The railway, which was completed in 1831, was built to carry minerals and goods through the hilly rural terrain of the Peak District within Derbyshire, England. The route was marked by a number of roped worked inclines. Due to falling traffic, the entire railway was closed by 1967. The remains of the line, between Dowlow and Cromford, has now become the High Peak Trail, a route on the National Cycle Network.

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).