In reply to James Malloch:
http://www.mayrhofen.at/fileadmin/userdaten/mayrhofen_at/dokumente/Infobl%C3%A4tter_2014/faszination_klettern_web.pdf
If you go to mayrhofen, you can get the guide at either the salewa shop or the book shop on the main street, you're then well placed for crags at ginzling or brandberg. if you go to the info centre there's loads of free maps and info about walks , huts etc. The via ferrata are well worth doing (see attached) especially the nasenwand at ginzling if your tips get too sore. there's a roadside campsite at Breitlahner next to the crags there. You may be able to park up outside mayrhofen on the left after the bridge over the river, after turning right just before the railway station. The zillertal beer is great, one euro a bottle in the supermarkets or about 4 euro a pint in the bars.
Make sure you get a vignette for the motorways or you'll cop a fine, try motorway services before entering Austria!
Post edited at 20:34