The Iberg Dripstone Cave (German: Iberger Tropfsteinhöhle) is a public cave and geology museum in southern Lower Saxony near Bad Grund, Germany. It is located on the western edge of the Harz mountains in the 563-metre-high (1,847 ft) Iberg mountain at a height of 440 metres (1,440 ft) above sea level in the chalk of an upper Devonian atoll reef. The actual dripstone cave is 123 metres long.