IceCube Experiment (IMAGE) University of Copenhagen - Niels Bohr Institute Caption IceCube is comprised of a cubic kilometer of ice, which is densely packed with optical modules. The detector is located deep below the surface -- it starts 1½ km below the ice and ends at the bottom at a depth of 2½ km. The instruments in the detector are comprised of 86 cables each with 60 digital Optical Modules (extremely sensitive light sensors). Credit (IceCube Collaboration) Usage Restrictions (IceCube Collaboration) 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.