Steige is a soil type described by Tom Stevenson (2011) as ‘a type of schist found on the north side of Andlau in Alsace, it has metamorphosed with the Andlau granite and is particularly hard and slaty [see slate]. It has mixed with the granitic sand from the top of the Grand Cru Kastelberg and makes a dark, stony soil.
Bibliography
Tom Stevenson (2011) The Sotheby’s Wine Encyclopedia 5th Edition by Tom Stevenson (Dorling Kindersley, 2011), p.17-19.