Borehole Camera (IMAGE) University of Texas at Austin Caption A camera used to image the structure of glacier ice is lowered into the borehole by a winch. The instrument is encased in a plastic cage to keep it stable as it is lowered 600 meters to the bed of the ice sheet. Credit Lauren Andrews Usage Restrictions Photo credit required 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.