WASHINGTON, - APRIL 10, 2015: Trains and passengers in a Metro Station. Opened in 1976, the Washington Metro is now the second-busiest rapid tran

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WASHINGTON, - APRIL 10, 2015: Trains and passengers in a Metro Station. Opened in 1976, the Washington Metro is now the second-busiest rapid transit system in the

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Size: 7360px × 4912px
Location: Washington DC, USA
Photo credit: © Sean Pavone / Alamy / Afripics
License: Royalty Free
Model Released: No

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