Impossible Engineering S3E5: Mega City Railway
- Aired: 2017-04-27
- Time: 21:00:00
- Runtime: 60 minutes
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Overview
Uncovering what it took to build one of the most ambitious rail projects in history, London's Crossrail. This staggering feat will span over 73 miles and transport 200 million people a year around one of the world's largest and busiest cities.