Thanks for those beautiful photos! It took me right back, reminded me why this is probably my favorite camino of them all!
Looks like you lost the trail before Puerto de Arbas, but no harm done... I got lost the same place the first time I did it, and the barbed wire ended up sending me to the health center in Pola de Lena for a tetanus shot. Still. I would do it again if it wasn´t snowing up there right now!
As for the question above, I put captions on a couple of the photos near where that turning is, perhaps it will help. I also found the Google maps feature on the right margin a real marvel, I wish I´d had that when I walked!