In reply to SturlaS:
> We also had some problems finding the bottom anchor the first time we rappelled down (in the dark). This anchor you don't pass when climbing up the wall. >
I only found the last anchor by chance because, as you say, it isn't on the climb up.
> The top anchor was easy to find (maybe we were lucky?). This anchor is also not used when climbing up the wall. >
I only found this one because I saw some people ahead of us using it otherwise I'd have had no idea it was there. As it was, we had to downclimb a scrambly ptich to get to it which I wouldn't have liked to solo or perhaps there was another, even higher anchor?
Either way, I don't think its a sensible option for a solo unless you're way within your comfort zone.