Why is such a tunnel needed?
I found such a photo on the Internet and became interested in what function such a structure could perform.
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I found such a photo on the Internet and became interested in what function such a structure could perform.
If a duct that transfers water is an Aquaduct, then a duct that transfers nature is an Ecoduct
What about a duct that transfers ducks?
Ducktoduct
What if the Ducktoduct was made of duct tape?
Well that would just be hilarious.
In that case, the bridge in OP's image is currently just an airduct.