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11

In the US ice grades fall into three categories; Water Ice, which is seasonal and often shifting in difficulty; Alpine Ice, which is permenent ice found on glaciers or high altitudes; and Mixed Ice, which is a mix of ice and rock. Water Ice and Alpine Ice are on the same scale -- though alpine ice tends to be a little easier at the grade. (ratings taken via ...


5

First of all, I will just spread some ideas. I never did a winter bivi by myself. Please don't blindly trust my words. But... because I am interested in the idea and like to do something similar in future, I searched for some info which might help you (and me). Still I am looking forward for better answers (which are based on experience and real ...


4

There is a definite danger of hypothermia depending upon the "type" of tent you choose to use. Eskimos live in -70F environments from one day to the next, so it is doable certainly. Native Americans as cited above have tents to provide for living in environments that commonly get to -50F (by keeping a fire burning inside the tent). A TeePee isn't what I ...


3

If you sleep only in a bivy bag direct on snow you need to have a sleeping bag with a good isolated pad for the temperature in the forecast at least. If you sleep in a well build igloo the temperature is much warmer than the outside. Snow is used because the air pockets trapped in it make it an insulator. On the outside, temperatures may be as low as ...



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