As in the movie The Edge, or The Grey, the small blue grey twin engine plane you are sole surviving passenger in goes down in the middle of snow covered heavily wooded mountains mid November . Though there was no fire the rest of the passengers are dead due to injuries the plane having passed through trees before hitting the ground . Though shaken up you are not injured that you know of though the trauma of the event has you stunned . My first instinct is to check the victims for life and if none found check the fuel tanks for leakage and shut off fuel lines to prevent loss in places I cannot see . Isolate the battery to insure no potential shorts can occur,,and see that the ELT if any, is functional. isolate power to the radio and attempt to make communications . Search for the pilots maps and his flight plan if any, to ascertain location for rescue teams to start once communications are established, if any. If the ELT is working but weather is forbidding it must be assumed that an extended stay is inevitable . If it is territory that is common to predators , the smell of blood of the dead victims in the air will attract their interest . Burying them in snow will not mask the sent . plastic bags work best but it is unlikely you have any . Though bear hibernate there are exception, and wolves don't hibernate . Knowing the plane needs to be seen from the sky ,once the snow has stopped the up side surface needs to be cleared and made obvious . Though I have more , this is where you can add your recommendations to this scenario .