1 Season
9 Episode
Richard Hammond's Big - Season 1 Episode 5 World's Longest Railway Tunnel
Richard ventures 2km beneath the Alps into the world's longest underground railway connection, the Brenner Base Tunnel, riding some giant machines!
- Year : 2020
- Country : United Kingdom
- Genre : Documentary
- Studio : Discovery
- Keyword : engineering, size
- Director :
- Cast : Richard Hammond
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