Active thermal refuge (IMAGE) Geological Society of America Caption Drone-acquired visible light and thermal image of the active thermal refuge. In the thermal image, purple indicates cooler surface water temperatures, whereas yellow areas are hot surface temperatures. The thermal refuge is towards the left of the image. Credit Kathryn Smith Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.