Foundation
CategoryTerrain
Overview
Foundation is an advanced version of landfill that is the only way to fill lava lakes on 
Vulcanus or oil oceans on 
Fulgora. Despite being unlocked on 
Aquilo, it cannot be used on the planet's oceans.
It can be used in the waters of 
Nauvis or the shallow waters of 
Gleba, at a much higher cost than using landfill.