Stalactites in Kartchner Caverns (IMAGE) University of Arizona Caption UA scientists have discovered diverse communities of bacteria, fungi and archaea on the surface of Kartchner stalactites that live off of nutrients from the cave drip water and contribute to the growth of the cave formations through calcite precipitation. Credit Bob Casavant/Arizona State Park Service Usage Restrictions This visual may only be used in conjunction with reporting/posting of this news release. Image/video credit must be included exactly as indicated. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.