Promau is located in the municipality of Hollenstein in the Amstetten district in Lower Austria. The pass connects Hollenstein in the northwest with Lassing in the east. Promau lies between the Göstlinger Mendlingtal and the Hollensteiner Hammerbachtal and Sandgraben. The valley train separates the Königsbergzug (1452 m) in the north from the Gamssteinzug (Hochkogel 1774 m) in the Ybbstal Pre-Alps.
The route was an important transport route for iron ore pig iron in the early modern period. The Lower Austrian Eisenwurzen Nature Park documents the small iron industry with several systems. There are always old hammer mills with their distinctive chimneys along the route.
The pass is not of great importance for cycling, but it is all the more scenic. The volume of traffic is almost zero, the road is narrow and leads through the valley in a wild and romantic way. From the top of the pass you have a nice view of the pre-Alps every now and then.