The Northern line is a London Underground line that runs from North London to South London. It is printed in black on the Tube map. The Northern line is unique on the Underground network in having two different routes through central London, two southern branches and two northern branches. Despite its name, it does not serve the northernmost stations on the Underground, though it does serve the southernmost station at Morden, the terminus of one of the two southern branches.
1995 Stock emerging from the tunnel north of Hendon Central station
City & South London Railway train, 1890
Sign displaying the route of the Northern Heights extension
Close-up of a High Barnet-bound Northern line 1995 stock cab
The London Underground is a rapid transit system serving Greater London and some parts of the adjacent home counties of Buckinghamshire, Essex and Hertfordshire in England.
The nickname "Tube" comes from the circular tube-like tunnels through which the small profile trains travel. (Deep level Northern line London Underground 1995 Stock train)
A sub-surface Metropolitan line train (S8 Stock) at Farringdon
The Metropolitan Railway opened in 1863 using GWR broad-gauge locomotives.
Passengers wait to board a tube train in 1906.
