Late Pleistocene Human Mandibles from the Niah Caves May Hint at Ancient Diets (image) PLOS Share Print E-Mail Caption Two human jaws from Niah Caves in Borneo found in 1958 but only just revealed. Top jaw is 30,000 years old, bottom jaw 11,000 years old; left image is Niah Caves archaeological site where they were both found. Credit Darren Curnoe Usage Restrictions CC-BY Share Print E-Mail 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.