Urban Tech Links: UTL

UTL is about exploring past, present and future urban technologies in science and fiction, etc...

Monday, January 29, 2018

Double-deck_and_multipurpose_tunnels

https://en.wikipedia.org/wiki/Tunnel#Double-deck_and_multipurpose_tunnels

https://structurae.net/structures/tunnels-caverns-and-shafts

JF at 4:11 AM

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JF: This is a general reference blog that links up to several things in addition to science & fiction, the esoteric & the mysterious. It's where mythology & technology, science & fiction, coincidence & synchronicity, occasionally merge. A vast amount of websites are referenced here so that visitors can see & compare various perspectives.

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