The Post Office Underground Railway, later re-named Mail Rail, transported mail under the streets of #London from 1927 to 2003.
Six and a half miles of tunnels with eight stations connected the East and West end of the capital.
#ThrowbackThursday via @ThePostalMuseum pic.twitter.com/k8HJ3MAmb4

from https://youtu.be/GuUaaPaTlyY
March 12, 2020 at 05:47AM