Perhaps the perception of risk varies with one's familiarity with the terrain and the hazards. I suspect this sort of thing is not far from routine in the minds of people who operate in such conditions -- in the same way we operate on our often-deadly freeways.

Good job by the Rangers -- more people who live and operate in the same terrain and hazards, and have done so all their lives.

I imagine this gentleman will have a few extra goodies with him next time he sets out.