In reply to mike kann:
> (In reply to Erstwhile) Obviously there is the guidebook,
Presumably you mean the relatively new Versante Sud rock climbing guide (?)
There is the beige C.A.I. definitive guidebook, which is also new and quite good (heavy going as ever, but masses of info and details). Capellari's Ghiaccio Verticale gives most of the icefalls (some still waiting to be discovered, without doubt).
As you say, rock development is very much W.I.P. The area was always more or less ignored because the rock faces are so small compared to the surrounding Dolomite peaks. Of course "small" here means 200 to 300 metres. The settings are gorgeous, completely differnt from the Dolomites but no less charming in their way.
Importantly the area offers occasional limestone/Dolomite relief therapy for those that live in these parts.
Lots of ski touring guides - the area is rightly famous for that.
Worth knowing that in Val Malena (southern area) you can drive up to Malga Sorgazza and eat and sleep year round in this brilliant little refuge run by my mate Maurizio (friendly prices, icefalls within sight of hut). For summer rock climbing on Cima d'Asta (starting from Malga Sorgazza) you can arrange to get your pack taken up on the service cable car to the refuge taking the sweat out of the walk up.
At some point I'll dig out some more photos.