Professor Hamish McGowan (IMAGE) University of Queensland Caption Professor Hamish McGowan gaining access to stalagmites around 120 metres below the surface in the Grotto Cave, NSW. Credit The University of Queensland Usage Restrictions To be only used with this story. 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.