A type of soil that retains moisture, that prevails in Mittelburgenland. The soil is one of the three natural quality factors in viticulture, along with the vineyard site and the microclimate. They are divided into three soil horizons, A, B, and C. The following types of soils prevail in Austria; loess, sand, loam/marl/clay, primary rock, shale, limestone, brown earth, black earth and basalt.