Route your belts freely underground.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Causes Spidertron to disappear when going crtl+b https://mods.factorio.com/mod/SpidertronEngineer
Looks like a bug on the Spidertron Engineer side. Have you reported it there?
taught i did but apparently not
