Baumann's Cave, located nearby Hermann's Cave, is a show cave in Rübeland in the district of Harz and is Germany's oldest show cave.
The grotto was formed in the Devonian limestone of the Elbingerode Complex at least since the Bode Valley was being shaped. The cave has been visited by man since the Stone Age and not first discovered in 1536 as many written accounts suggest. The year of discovery in 1536 in combination with the tale of the miner, Baumann, who is supposed to have discovered the cave, are part of a false story dating back to Nazi times when a politically suitable jubilee date was being sought.
The cave is frequently mentioned in the early scientific and travel literature as it has been open to the public with guided tours since 1649 when Valentin Wagner was installed as first cave guide.