London underground station sign
LONDON - APRIL 4: London underground sign on April 4, 2015 in London, UK. The system serves 270 stations and has 402 kilometres of track, 52% of which is above ground.
Size: 4806px × 3200px
Photo credit: © Zoonar/Andriy Kravchenko / Alamy / Afripics
License: Licensed
Model Released: No
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