Impossible Engineering

Season 7 Episode 2: World's Toughest Tunnels (London's Super Sewer)

A team of engineers are overhauling London's underground infrastructure to build a world-class sewer system. Using cutting-edge tech and the latest construction methods, they work to transform a centuries-old network into a modern-day masterpiece.

Genre:

Documentary

Seasons:

10

Episodes:

82

Actor:

Mike Bratton, Susie Sheehy

Quality:

HD

Status:

Ended

First Air:

2015

IMDb:

7.1