Olesya said:Later, he talks about the fact that Kholat Syakhl is a prominent magnetic anomaly zone. This was first pointed out by the investigator, E.V. Buayanov from St.Petersburg, who visited a place of the tragedy and discovered that the needle of the compass points out not to the North magnetic pole, but deviates to the west to 31 degrees. Then, he says that considering that for the Ivdel region the magnetic deviation accepted as pointing to the east and equal to 17 degrees 50' that means that this magnetic anomaly changes the compass readings as almost as 50 degrees (31°+17°50'=48°50') and this is a lot.
I looked this up and could find no mention of this magnetic anomaly. The skiers had to be using a compass in the overcast of the last day and their compass course was "dead on".