Rim of a Supervolcano Caldera (IMAGE) NASA/Goddard Space Flight Center Caption In Yellowstone, the rim of a supervolcano caldera is visible in the distance. Credit Credit: National Park Service. 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.