The Alexanderschanze (Alexander's Redoubt) is a mountain pass, 970.8 m above sea level (NHN),[1] on the B 28 federal road at Freudenstadt in the Northern Black Forest in southern Germany.

The Alexanderschanze Pass lies between Freudenstadt-Kniebis, Bad Peterstal-Griesbach, Oppenau and Baiersbronn and provides a connection between the Rhine Plain at Strasbourg and the Neckar valley, which allows the Black Forest to be crossed from east to west without any other major valley crossings and pass ascents.

[2][3] Even if there are no reliable sources that the Romans built this road, it can be safely assumed that the pass was on a long-distance route in the early Middle Ages;[4] this is also evidenced by tracks found in the forest.

[5][6] In this context, "track" refers to the grooves left by wooden wheels shod with steel bands that can still be seen in the rock today.

The bank is interrupted at the north-west corner, i.e. in the direction of the Oppenauer Steige, a mountain path.

In the summer of 1940, Adolf Hitler spent just one week in his nearby headquarters, the Führerhauptquartier Tannenberg.

Today the spruce forest and the heritage site form the 190-hectare nature reserve of Kniebis-Alexanderschanze, south-east of the Schliffkopf.