Ten-week closure of the Blackheath to Charlton railway tunnel

Network Rail is warning that the railway tunnel between Blackheath and Charlton in southeast London will close for ten weeks this summer, affecting Southeastern customers.
The mile-long tunnel opened in 1849 but has been increasingly suffering from leaks and water damage, mainly caused by brickwork damage caused by the freezing and thawing of rainwater, which filters through the ground into the tunnel.
Blackheath Tunnel (c) Network Rail
Although Network Rail says the tunnel structure is safe, th