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| - The Central line is a line of the London Underground and coloured red on the Tube Map. It is a deep-level "tube" line, running east-west across London, and has the greatest total length of track on the Underground. Out of the 49 stations served, 24 are below ground. It is the second busiest line on the Underground.
- The Central line is a London Underground line, coloured red on the tube map. It is a deep-level "tube" line, running east-west across London, and, at km (), has the greatest total length of track of any line on the Underground. Out of the 49 stations served, 20 are below ground. It is the second busiest line on the Underground after the Northern line.
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