- Urban explorers finally enter the 'Holy Grail' of tunnel-hunters: London's six miles of lost 'Mail Rail'. "It was like fighting the last boss in an RPG" http://www.silentuk.com/?p=2792 21 comments reddit.com
Linking pages
- London's Victorian Hyperloop: the forgotten pneumatic railway beneath the capital's streets https://www.newstatesman.com/politics/2013/12/londons-victorian-hyperloop-forgotten-pneumatic-railway-beneath-capitals-street 14 comments
- London's Victorian Hyperloop: the forgotten pneumatic railway beneath the capital's streets http://www.newstatesman.com/future-proof/2013/12/londons-victorian-hyperloop-forgotten-pneumatic-railway-beneath-capitals-street 0 comments