Episode Info
Next: 1x02 -- On the Move (Jul/09/2015) [Special Airtime: 07:30 pm]
Dallas takes a look at what goes on underground to keep our country on the move. He takes a look at the past to find out how a secret wartime pipeline is now delivering fuel to Heathrow Airport.
Dallas learns how the Shard of London stays standing on soft clay. He also canoes along a secret river under the city of Bristol and finds out why Edinburgh was sited on an ancient volcano.