Lava

Lava is a tile in Factorio classified under the decoration category; it serves as a decorative terrain surface used to change ground appearance rather than representing a resource or crafting ingredient. As a tile entity, Lava is used by map generation and map-editing tools to place visually distinct ground and to convey environmental variety on a surface layer. The entry provides the localized name "Lava" and its category, indicating its role is primarily visual and part of the game's tile system.