Dark dry lichen

Dark dry lichen is a tile in the Factorio system categorized as a decoration; it functions purely as a decorative ground surface used to change terrain appearance and has no production inputs, outputs, or gameplay mechanics affecting resources, pollution, or entity behavior. As a decorative tile, Dark dry lichen is intended only to alter the visual look of areas where it is placed or generated and does not confer bonuses, penalties, or crafting recipes.