Kriemhildenstuhl

The Kriemhildenstuhl, more rarely Krimhildenstuhl, in the forests around the Palatine county town of Bad Dürkheim in the German state of Rhineland-Palatinate, is an old Roman quarry, which was worked by the 22nd Legion of the Roman Army, who were stationed in Mogontiacum around 200 A. D.The site has been designated as an area monument and is owned by the Drachenfels Club.

Source: Wikipedia