Tube geek (36)Depth and height How deep, or how high, does the Underground network go? London's surprisingly hilly, but only in places, so some of the answers may surprise you...
Stations closest to sea level: West Ham (1m above); Bermondsey, Canning Town, North Greenwich (2m above); Canary Wharf, Elephant & Castle, Kennington, Lambeth North, Parsons Green (3m above) Stations highest above sea level: Amersham (145m above); Chalfont & Latimer (122m above); High Barnet (111m above); Chesham (110m above); Hampstead (108m above); Highgate (100m above) (all based on typical ground level outside station)