The Schwarze Grat between Eschachthal in the Bavarian county of Oberallgäu and Bolsternang in the Baden-Württemberg county of Ravensburg is 1,118 m above sea level (NHN)[1] and thus the highest mountain in Ravensburg, in the province of Tübingen (Baden-Württemberg) and the Adelegg range, although within the Adelegg region it is topped by the Ursersberg (1,129 m).

The Schwarzer Grat stands in the southeast of Baden-Württemberg and belongs to the small mountain range of Adelegg, which is roughly north of the Allgäu Alps and extends far into the northern Alpine Foreland.

The summit rises 1.8 km south-southwest of Eschachthal, a village in the Bavarian municipality of Weitnau, and 2.3 km (as the crow flies) north-northeast of Bolsternang, a village in the Württemberg municipality of Isny im Allgäu.

Around 950 metres south-southeast of the top of the Schwarzer Grat on the state border rises the peak of the Raggenhorn (1,056.2 m); beyond that is the Weitnau village of Wengen (Bavaria).

To the east the slopes of the Schwarzer Grat descend to the little stream of Rotenbach, a southwestern tributary of the Eschach, which flows to the north of the mountain.