On: Engineering Geology of the BART System (2000)

[SequoiaHope]

I love this deep lore on BART! The fact that the trans bay tube is literally a big welded metal tube continues to fascinate me. When I first learned about that I had never realized that was even possible. There’s some great history on YouTube about BART too.

[staplung → SequoiaHope]

One of those videos: https://www.youtube.com/watch?v=247JT7ctQ_I

[kridsdale3 → staplung]

Awesome!

[brcmthrowaway → SequoiaHope]

So are the Sydney Harbour Tunnels