Apr 3, 2025 · 52m
An extension is now underway to get people into the centre of Australia's biggest city, including a new tunnel crossing deep under Sydney Harbour.
Sydney's Super Tunnel
The documentary series, filmed over seven years, delves into the complexities of the Sydney Metro project, focusing on the tunnel construction, including under-harbor tunnelling, the use of large tunnel boring machines, and excavation work deep below the city. It also highlights the role of steam locomotives and other aspects of the project including rigorous testing of the automated driverless trains to ensure the safety and longevity for many years of public use.
Season 2 Episodes
Browse every episode and jump into details.
Apr 10, 2025 · 52m
As Australia's largest transport project gets underway, we go back under Sydney Harbour to check out history in the making as the construction of the twin metro rail tunnels continues deep under the surface.
Apr 17, 2025 · 52m
After the completion of 30km of tunnelling, workers prepare to build railway stations, lay tracks and test driverless trains; at Central Station, Australia's busiest railway station, Central Walk, the underground pedestrian subway comes to life.
Apr 24, 2025 · 51m
After almost 10 years of planning, building and testing, involving more than 60,000 people from around the world, Australia's largest transport infrastructure project nears completion.
Season 2 FAQ
Quick answers about this season's release timeline and episode lineup.
When did Sydney's Super Tunnel Season 2 premiere?
Sydney's Super Tunnel Season 2 premiered on April 3, 2025.
How many episodes are in Sydney's Super Tunnel Season 2?
Sydney's Super Tunnel Season 2 has 4 episodes.
What is the first episode of Sydney's Super Tunnel Season 2?
The season opens with Season 2 Episode 1, "Great Expectations". It aired on April 3, 2025.
Go to Season 2 Episode 1