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|Image: historic engraving of the Esperhöhle.|
This cave ruin has a labyrinth of grottos, caverns, and roof collapses. Famous is a pit called Klingloch (hole of sound): if a rock is throws into the 13m deep pit, it sounds several times until it reaches the ground.
In former times this cave was used as show cave. A wooden stair was removed in the 1970s because it was broken and dangerous. So it is only possible to visit the entrance area, which is imprssive though. The visitor should be very careful with the various drops which are not barricided. They are all together very deep.
The cave was named after Esper, an early explorer of the caves of this area.