I was just reading this question What is the safest way to purify water? Now I walk a lot in Snowdonia in North Wales and on occasion I drink from mountain streams. I've even camped next to mountain ...
I'm trying to get some info on the grade of the North ridge (going into Cwm Glas, not the main crib coch path but the alternative route coming from Nant Peris) of Crib Coch. I've been up Crib Coch ...