The Iberg Dripstone Cave () 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 Iberg mountain at a height of above sea level in the chalk of an upper Devonian atoll reef. The actual dripstone cave is 123 metres long. With its Captain Spatzier Gallery, the Yellow Climb (Gelben Stieg) and two other caverns, the total length of the cave is .