Stalagmite_Hoti_Cave_1 (IMAGE) University of Basel Caption Stalagmite from the Hoti Cave. Holes are created by sampling for radioactive dating, and scratch marks by sampling for isotope analysis. Credit Timon Kipfer, University of Basel Usage Restrictions Only to be used in reporting on the related press release. License Original 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.