Carved rock found deep in Manot Cave (IMAGE) Case Western Reserve University Caption A rock carved to look like a turtle was placed in a niche in the cavern. The carvings were done approximately 35-37,000 years ago. Credit Clara Amit, Israel Antiquities Authority Usage Restrictions N/A 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.