Like the entirety of the Swabian Alps, the Albtrauf leads from the southwest to the northeast, approximately following the line of Donaueschingen–Lemberg–Balingen–Reutlingen–Kirchheim unter Teck–Gingen an der Fils–Unterkochen. On a closer look it is markedly interrupted by many deeply eroded valleys. The protruding inliers and outliers support famous castles, which are visible from a great distance, such as the Hohenzollern Castle, the Hohenneuffen Castle and the Teck Castle. Major traffic routes leading from the alpine foothills to the Albtrauf are known as the Alb ascension, the best known of them being the Geislinger Steige.
Geology
The Albtrauf is made up of an upper rock layer of the Brown Jurassic and lower and middle layers of the White Jurassic. The harder layers of the Brown Jurassic act as the foundation of this bed and so form the highest, often weakly developed layer of the Alpine foothills. The Brown Jurassic differs regionally: Sandflaserschichten in the eastern Alps, Blaukalke in the mid Alps, oolithische Kalkmergel in the western Alps. The lower section of the stepped slope are made up of the claystone layers of the Brown Jurassic, stretching to the Ornatenton Formation which ends this section. The equally soft Kalkmergel follows as the first layer of the White Jurassic. Hard limestone acts as a layer-former in the W β,, as well as in the W δ. In between these is a marl complex.
Geomorphology
The intermediate inclination of the Albtrauf amounts to roughly 35 degrees. In the Erms valley region and near Balingen the Albtrauf reaches an average height of nearly 400m. The edge of the slope is at approximately 1000 metres above sea level in the southwest and at approximately 650 metres above sea level in the northeast. In the Eastern Alps and in parts of the Mid Alps W ß does not appear as a layer-former, but as escarpment in the slope which climbs up to the W δ. W ß and W δ levels, the latter being about 100 m high, are distinctly pronounced from Reutlingen to Mössingen. Further to the west the W ß forms both the front of the Albtrauf and an adjoining dip slope, which is several kilometres broad. Moreover, the W δ step, which includes inliers and outliers located on the outskirts such as Kornbühl, is receding. Retrogressive erosion has caused the Albtrauf to recede southeast by an average of few millimeters each year. This process is responsible for the deep dips and embayment along the Albtrauf. Landslides and rockfalls also contribute to this process. The ensemble of relief features includes cuestas, front side valleys, rock ledges, spurs and inliers. The most famous inliers and outliers without a dip slope include, from northeast to southwest, Ipf, Hohenstaufen, Achalm and Hohenzollern. Kaltes Feld, Michelsberg, Farrenberg, the plateau of Burgfelden and Plettenberg rank among the most impressive inliers and outliers with a dip slope.
Miscellaneous
The vegetation consists mainly of beech wood forest. Juniper heathland, typical of the high plains of the Swabian Alps, can also be found in scattered locations, such as on Jusi, and is generally under conservation. Slow-growing oaks grow on the rocky outcrops. Spruce and fir forest can also be found in the Hohen Schwabenalb as a result of forestry atypical for the area. White outcrops of reef limestone protruding out of the forest all around are also characteristic. The Albtrauf was poetically dubbed “Blue Wall” by Eduard Mörike, owing to the pale blue shimmer that appears when it is viewed from a distance. The , a hiking trail maintained by the Schwäbischen Albverein, provides access to the Albtrauf and leads from Donauwörth to Tuttlingen.
Images
Literature
Reiner Enkelmann, Dieter Ruoff, Wolfgang Wohnhas: Der Albtrauf. Natur und Kultur zwischen Ries und Randen. Silberburg-Verlag, Tübingen und Lahr/Schwarzwald 2010.
Otto F. Geyer und Manfred P. Gwinner: Einführung in die Geologie von Baden-Württemberg. Stuttgart 1964, S. 60 ff. und S. 148 ff.
Klaus Eberhard Bleich: Das Alter des Albtraufs. In: Jahreshefte des Vereins für vaterländische Naturkunde in Württemberg 115, Stuttgart, 1. November 1960, S. 39–92
