Sorry, I can’t judge. Also from this sight: http://www.telegraph.co.uk/news/worldnew...tlett-died.html

“Local authorities are mystified as to the cause of the tragedy since there was no trace of an avalanche, the weather was good and the men were well-equipped.
…"We are unsure about the cause of the accident at the moment."
He added: "One theory is that they may have been hit by a piece of falling ice that broke off from the serac.
”

Thus too little info to say anything.
Accidents could happen to any of us such as a tree falling on you (happened with my nephew--- and he lived!)

-Barry