MJ Maccardini (trailerfullofpix)'s photos with the keyword: midland railway

I hadn't heard of the Belsize Tunnel before spotting this ventilation shaft next to a block of flats in Parkhill Road. The tunnel takes the Midland Main Line between Kentish Town and West Hampstead. There's a wall at the back of the carpark and a taller person could probably see the tunnel entrance below. en.wikipedia.org/wiki/Belsize_Tunnel