Comment by krisoft

> Civil engineers have contemplated at length just about every structural scenario you can imagine.

I bet. Do they recommend cut and cover highways in contested environments? Or do they recommend shooting back until the area is no longer contested? (Which you practically have to do anyway to build the cut and cover tunnel in the first place.)

I don’t doubt that it is a good idea to cover with earth C&C bunkers and launchers and such. But those are point installations. Miles and miles of tunnels used for logistics are lines. They scale very differently.