About this showing of Canals: The Making of a Nation
How the process of building Britain's canals resulted in furthering geological knowledge, as surveyor William Smith created the first geological map of England and Wales.
Previously on TV
Canals: The Making of a Nation
Previously shown on BBC Four on Fri 25 Sep 2026 at 01:20.
This showing has ended
This showing was on BBC Four at 01:20 on Fri 25 Sep 2026. See future airings below or open the main programme page for the latest TV times.
Airing details
ChannelBBC Four
StartsFri 25 Sep 2026, 01:20
EndsFri 25 Sep 2026, 01:50