I am really curious about the reports of the descent to Zubiri and also downhill from el Acebo. Really puzzled, actually.
I set off from Roncesvalles on June 23rd, 2006.
My memory is untrustworthy, but I think I recall reaching what may have been the Alto de Erro, then carefully crossing the road, going left into a forested way and eventually coming down to Zubiri, and on to Larrasoaña.. does that sound right to those who either know from experience or from reading?
I have just looked online and found this youtube post. At about five minutes in it shows the terrain fairly clearly.
The part I was actually concerned about was El Perdón... In fact I have walked that willingly about four times! Yes, it has to be treated with great respect, and it was where I really learned that once on the way, there is no way back. It is not an option. (An opinion. Yours may differ.)
I also clearly recall a very enjoyable trot/walk down from El Acebo after a most wonderful second breakfast, having slept in Foncebaddon, and a very fine morning sunrise experience at Cruz de Hierro.
I repeat: my memory can be entirely erroneous. A family failing.
What I see currently is that some people seem to think and or find the descents in both locations are not ... safe? Has there been that much erosion since 2006?
I cannot gainsay anyone, your experience is your evidence. For those yet to approach either sections, down to Zubiri or down from El Acebo, perhaps don't decide till you are there.
And for your information, my avatar photo was taken very close to El Acebo. Why? It reminded me, en grande, of home terrain...
Taken, summer 2006.