Liftboat Myrtle (IMAGE) Proceedings of the National Academy of Sciences Caption Liftboat Myrtle, upon which the IODP-ICDP expedition to drill into the peak ring of the Chicxulub impact crater took place. Credit Image courtesy of the Jackson School of Geosciences, The University of Texas at Austin 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.