3 Tymor
16 Pennod
Richard Hammond's Engineering Connections - Season 2 Episode 5
Richard uncovers why an ancient Celtic boat-building technique was crucial to the development of the tallest road bridge in the world.
- Blwyddyn: 2011
- Gwlad: United Kingdom
- Genre: Documentary
- Stiwdio: National Geographic Channel, BBC Two
- Allweddair: engineering
- Cyfarwyddwr: Richard Hammond
- Cast: Richard Hammond