>>527355758
>I might also dig a channel for trains to pass through the center of my future assembly area so my belts can pass directly over without elevation changes.
Ooh that sounds nice. Would be nice with retaining walls but I guess the belts couldn't go over those. Yeah they need tunnels.

Wish I could find a better pic of the LA freight train tracks without trash, but they have such a layout with a lowered track.