need massive mountain range this is the cold and windy bolshoi's would pass the snow here is between one and a half and four meters deep avalanche safety specialists are probing the snow structure on one of the slopes. the top layer of snow drifts on a slope is unstable and skis could trigger an avalanche shift attention those of you who are keen to scull mountain peaks please be careful. some avalanches a wet others a dry it all depends on the snow's composition the speed of avalanches varies between seventy and four hundred kilometers an hour man can do nothing in the face of tons of snow rushing down to such a velocity. and yet people do live in the mountains they study avalanches to be able to protect themselves from each year skiers and snowboarders tempt fate by taking to the mountain slopes. in this weather station in the q.b. massive is situations close to the town of one hundred fifty kilometers north of the arctic circle it is one of the instruments of the avalanche safety service it records dozens of readings several times a day snow and ground temperatures wind direction