I parked and booted up on the A5 near Glan Dena. This is a bit like getting booted up on the hard shoulder of the M1 as cars accelerate gleefully at the start of the big straight east of Llyn Ogwen. The path up the Afon Lloer is a bit threadbare in places. If in any doubt, once on the left hand side of the river, stay there. The path turns left before the lake and heads up the east ridge of Pen yr Ole Wen. The scrambling section is short and straightforward. It goes up the obvious line of weakness at the back of a recessed area a bit left of centre. It is a gully so I suspect may get a bit wet at times but not today.
After that a glorious ridge walk took me all the way over Pen yr Ole Wen and Carnedd Dafydd to Carnedd Llewelyn in perfect late summer weather. From there a walk and a short, easy enough scramble took me to the Bwlch Eryl. I had meant to continue to Pen yr Helgi Du but the water of the Ffynnon Llugwy glistening in the sunlight was too much temptation. I headed straight down and jumped in for a late afternoon dip before walking down the long track back to the A5 where the campsite driveway gives access to the old road and so back to the start.