Laterite is a reddish-brown surface formation derived from weathered rock containing rich iron and aluminum deposits. In its weathered form, laterite has a clay-like consistency granting it greater water-holding capacity than sandy soils and thus making it valuable for flooring and blockwork (wall units). When compacted, laterite serves as flooring systems for vernacular homes, bases for roadways and fill for foundations and embankments. When moistened, builders can mold laterite into dense bricks that require little mortar, cured according to strength needs, and because of its thermal nature, it can act as building coolants.