Buriable concrete ducts for underground belts

We could build some undergroud pipes with some digging, then what about the belts? To protect our product from crunchy soil, there should be a little shielding, like a pipe for flowing belts. Soild concrete duct.
This design might be little annoying when bending the belts into the duct, but with couple of conveyor lifts which will be available soon, there will be no problem with the ends of the tunnel.
Plus, if we make it to be stackable, the ducts could also be used as bridges over some gaps, like a depleted mine.

Dobrý nápad. Spestrilo by to hru.
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Good idea. It would add variety to the game.

do not forget to add the lift's for the belts so they can be unserground/above ground.
on a side note. tune-up the demolish function to ignore underground items when doing mass deletion. happen a few times to me i accidently deleted pipes when cleaning-up a whole section. had a few underground pipes in there and had to fix them afterward. what a pita
possibly adding a checkbox in the config or an key option (ignore underground items in mass deconstruct)