That is a score! Thanks for sharing. As stated above, the possibilities are endless. If you pick through everything closely you can sometimes find the cause of death, but not always.
As a side note, I spent some time in snow cave up in the Jarbidge back in the 90s; and the last time I went to the Big Reno (gun) Show (2013) it was some serious winter out on the flats to the east. Brutal.