Teufelshöhle
The Teufelshöhle (lit. 'Devil's Cave') is a dripstone cave situated in the Main-Kinzig district in Hesse, Germany. It is located approximately three kilometres (1.9 mi) north of Steinau an der Straße, nestled between the Spessart Mountains to the south and the Vogelsberg Mountains to the north, on the slope of the Kieskopf. This natural geological monument is approximately 2.5 million years old. The cave was discovered in 1584. For a considerable period, local inhabitants avoided venturing into the cave due to a prevailing belief that the devil inhabited it. The first brief exploration of the cave took place in 1830. Subsequently, from 1905 to 1908, an access tunnel was excavated, leading to the development of the cave. In 1927, it was officially opened as an electrically illuminated show cave, spanning a length of 174 m (571 ft) and comprising three substantial chambers, one of which contains dripstones.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).