Route your belts freely underground.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Unable to switch to 'outgoing' mode using the belts. Pressing R makes it spin around instead of changing modes. Save is here https://drive.google.com/file/d/1Jhe_F2tOR-iw1j2tMeoYe_ZPzrgC5PBY/view?usp=sharing
This is a Krastorio 2 bug, and is fixed in the 1.3.x beta versions available via the K2 Discord.