The IceCube Neutrino Observatory is a unique research facility located at the South Pole that uses a cubic kilometer of ice as a particle detector. This observatory is designed to detect and study high-energy neutrinos, which are particles that travel at nearly the speed of
From Wikipedia
The IceCube Neutrino Observatory is a neutrino observatory developed by the University of Wisconsin–Madison and constructed at the Amundsen–Scott South Pole Station in Antarctica. The project is a recognized CERN experiment (RE10). Its thousands of sensors are located under the Antarctic ice, distributed over a cubic kilometer.