Bockstein Cave - Credit: Wikimedia Commons
The Bockstein Cave, is part of the Bockstein complex – a White Jurassic limestone rock massif. The rock shelter, among small peripheral caves is situated around above the Lone River valley bottom, north of the towns of Rammingen and Öllingen, Heidenheim district in the central Swabian Jura, southern Germany. Several small openings, that are the actual entrances to the site, lead to various cave sections. The large frontal opening is of modern origin, created during the first excavation works in the late 19th century. Read more on Wikipedia
Source: en.wikipedia.org