Numerous Deposits (IMAGE) Brown University Caption New research shows trace amounts of water trapped in ancient volcanic deposits on the moon. The finding bolsters the idea that the moon's mantle is surprisingly water-rich. Colored areas indicate elevated water content compared with surrounding terrains. Yellows and reds indicate the richest water content. Credit Milliken Lab / Brown University Usage Restrictions None 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.