First time was in about 1971/2 as a young lad, trailing exhaustedly after an ex SBS Royal Marine Commando, who although in his 50's (as I am now!) could still put in a good day in the hills.
Second time was via a 670ft v.diff rock-climb 'Avalanche Buttress' - on a Craig yr Ysfa, a remote crag at the back of Carnedd Llewelyn. We completed the rock climb up onto the top of Llewelyn, before traversing the range and descending to Ogwen, from Pen yr ole yr wen.
"As an adolescent I aspired to lasting fame, I craved factual certainty, and I thirsted for a meaningful vision of human life - so I became a scientist. This is like becoming an archbishop so you can meet girls."