It ends after 43.6 kilometres (27.1 mi) (including Menzenschwander Alb) at a confluence with the High Rhine at Albbruck.

The headwaters of the Menzenschwander Alb lie on the southern slope of the Feldberg mountain range in the Landkreis of Breisgau-Hochschwarzwald.

Below the Kluse, the Menzenschwand Alb plunges with several waterfalls through a small ravine to a basin created by the former Krunkelbach valley glacier.

During the ice age, the Alb glacier was about 300 metres (980 ft) high in this area, and its meltwater overflowed the Häusern saddle, into the Schwarza valley.

The valley is no longer bordered by narrow, wooded ridges, but instead by the undulating Hotzenwald plateau in the municipalities of Dachsberg und Höchenschwand.

During the Würm ice age, the Alb glacier ended at the point where we now find the village of Niedermühle.

The slope of the Alps increased greatly in the ravines and the river forces its way through the more canyon-like passages and blocked sections known as the Teufelsküche ("Devil's Kitchen").

[2] In this section the road runs up to 100 metres (330 ft) above the river and passes through five short tunnels drilled through the cliffs, giving it the nickname "Axenstraße of the Black Forest".

From the hamlet Hohenfels, the road descends to the valley floor at Albbruck, where the Alb flows into the High Rhine.