There are also a number of facebook groups for accident discussion, analysis, and learning that are kept pretty civil and are usually good resources. There's s

There are also a number of facebook groups for accident discussion, analysis, and learning that are kept pretty civil and are usually good resources. There's some pretty interesting chatter about this incident in them right now. Turns out a large boulder shifted and cut their guide line (and significantly obstructed the route out) which led to this - there's no amount of planning that would've prevented that.