I thought it was due to the pressure, but he explained that the ice at great depths acts more like an elastic band being stretched to the sides, rather then compressing. I did a lot of this on the Palmer back in 1992. It sounds like dig and document. Sorry bad pun. Check it out, it is awesome and has all levels of interest and abilities addressed in it.
Kids actually go to the glaciers to do real hands on, dirty, get wet and cold science.
I'm too old. He actually, if we can get manifested for a flight to Siple Dome, extended us a personal invite. I spent the rest of the afternoon typing and organizing stuff for our class. Of course the doors to the building were not unlocked and I had to act as a doorman once again. The class went well, but, changes in people's schedules are driving me nuts.