Roman vs. Modern Engineering

For 1800 years the water from the hot springs in Bath, England was carried to the River Avon through a drain built by the Romans. In the 1960s, an extension was built after some marshes along the river were filled in. Two years ago the modern extension collapsed and had to be rebuilt. Now the rebuilt section is backing up, and a major overhaul is required.

Still no troubles with the Roman part of the drain.