The Backstairs Passage Pipeline
The Backstairs Passage pipeline – Tunnel, SA

The Backstairs Passage pipeline, constructed in the early 20th century, extends through a tunnel from Cape Jervis to Penneshaw. This tunnel is a remarkable engineering achievement, as it is one of Australia’s few undersea tunnels. The government enlisted workers from the nearby Talisker mine for the tunneling project. Stretching nearly 20 kilometers beneath Backstairs Passage, you can traverse the entire tunnel, connecting Cape Jervis to Penneshaw, without the need for a ferry.

8 Comments

  1. Cooper Gregor

    Please j must know where the entrance is on the kangaroo island side

    Reply
  2. Cameron

    Can you please post where the entrance is, I wanna explore it this weekend if it’s even possible to find the entry.

    Reply
  3. Cape Jervis Billboard

    Such a good effort, pity there is no mains water in Cape Jervis

    Reply
  4. Jeannie Simpson

    Would be great to see some of the feats that people did in the early 20’s

    Reply
  5. Liane Dawson

    What’s with the Jim’s??

    Reply
  6. Gail

    Is it accessible to the public?

    Reply
  7. Aussie

    I went out to Cape Jarvis and walked around for 30 minutes to a hour and didn’t find any sign of the tunnel but there is one that exists the only problem is it flooded and the issue is it unsafe to explore unless you are a experienced cave diver

    Reply

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