Or
Enter your email address and we'll send you a link to reset your password.
To view this video please enable JavaScript, and consider upgrading to the latest web browser
Hart-Davis analyses the Romans' ingenious surveying methods that enabled them to build their arrow-straight roads. He also commisions a replica of an ingenious giant water wheel used to remove water from flooded Welsh gold mines.
Our movie and video library can only be streamed or downloaded by members only