June 3rd we approached the Silverhorn on Mt Athabasca but turned around at the Nunatak -poor weather and we were moving slow. There is several hundred meters of tedious wet post holing around the little cliffs and horizontal morraine crest on the approach. Travel on the glacier was supportive and good, little evidence of crevasses as yet. As per usual I set a track low across the glacier while heading to the Nunatak and of interest is that the serac that calved from the near end of the North Ramp (May 29 or 30?) over ran the high trail left by other parties but didn't make it to my low trail.
I was happy to be gone from there for 8 hours when my fellow guide, Peter Amann, witnessed an avalanche come from half way up the Silverhorn and run to the Nunatak. Sounds like it was a slab avalanche triggered by rain, Peter?
Happy trails,
Barry Blanchard
Mountain Guide
www.barryblanchard.ca
www.yamnuska.com