Mountains and hills of the Hegau

250px|thumb|right|Tuffite from Hohentwiel 250px|thumb|right|Phonolite from Hohentwiel 250px|thumb|right|Natrolite from Hohentwiel (Type locality)

Mägdeberg is a mountain of volcanic origin in the Hegau region (Konstanz district) of southern Baden-Württemberg, Germany. The ruins of Mägdeberg Castle remain on top of it.

The Hohenhewen, also called the Hohenhöwen or, colloquially, Höwen, is the local mountain of the town of Engen, located in the Hegau region of Baden-Württemberg, southern Germany. It is of volcanic origin.

Hohenkrähen () is a mountain of volcanic origin in the Hegau region (Konstanz district) of southern Baden-Württemberg, Germany. The ruins of Hohenkrähen Castle are on the top of the mountain.

Höwenegg is a mountain of volcanic origin in the Hegau region (Tuttlingen district) of southern Baden-Württemberg, Germany.

mountain in the Hegau in Baden-Württemberg, Germany

thumb|Former quarry at Hohenstoffeln thumb|Melilitite from Hohenstoffeln Hohenstoffeln is a double peaked mountain of volcanic origin in the Hegau region (Konstanz district) of southern Baden-Württemberg, Germany.