Editing v0.31:Clay

'''Clay''' is one of the many types of [[soil]] that can be found in Dwarf Fortress. [[Aquifer]]s are never present in clay layers.

Clay can be gathered for use in [[Ceramic_industry|Ceramics]].

The gathering and use of clay is done from a [[Kiln]] and behaves similar to most material production, but includes elements similar to [[glass]] production. In order to gather clay a gathering zone must first be designated, much like with [[sand]], however unlike sand gathering clay creates a clay "boulder" (the same as raw stone) and does not require a bag. These clay boulders are stored in a Stone stockpile and may be used to build [[workshop]]s and [[construction]]s, but constructed clay floors can '''not''' be used in place of natural soil. As with sand, clay can be gathered indefinitely from a single tile.

Clay can be made into pots, [[block|bricks]], [[statue]]s, [[hive]]s and [[craft]]s. Small pots, called jugs, function similar to bags and waterskins, while large pots are treated like barrels. Creating any object from clay requires a unit of fuel.

Before an [[earthenware]] pot (large or small) can hold liquids, it must be '''glazed'''. Glazing is performed at a [[kiln]] and requires either a unit of [[ash]] or a unit of [[cassiterite]] ([[tin]] ore), plus a unit of fuel. [[Stoneware]] and [[porcelain]] pots do not need to be glazed.

When an underground plant ([[tree|trees]], [[shrub|shrubs]], [[grass]] or moss) grows on a muddy stone floor tile (after discovering a [[cavern]]) and is either trampled, gathered, cut down or removed via building a dirt road on top of it, the floor tile turns into a soil type appropriate to the [[biome]] - for biomes which lack soil layers altogether (such as mountains and glaciers), a random soil type will be selected, which might sometimes be clay.