The biggest challenge is finding ice without dust layers from historical volcanic activity, and the South Pole is particularly clean because of it's remoteness as well as the prevailing wind directions. There is, however, one big dust layer that causes signal distortion.
replydust layers wont effect them neutrinos can pass anything or I am missing a point
replyYou have to see the light from when a neutrino interacts with something, so you want very clear water or ice for that.
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