most tours will include in the price the use of avalanche transceivers shovels and probes and will provide training on the use of them and other avalanche rescue equipment some operators are beginning to offer additional avalanche protection that reduces avalanche burial potential or increases burial survival time i e avalanche air bags or avalungsthe avalung other hazards of heliskiing include falling into very deep tree wells snow mushrooms dropping from trees suffocation after falls in very deep powder rare crevasses on glaciers common mountain terrain features such as cliffs and creek beds and obviously typical ski related injuries helicopter crashes are also far from unheard of financial hazards include pre paid ski days lost to un flyable weather references