In reply to Smythson:
Up until recently, NZ was not well endowed with good descriptive mountaineering guide books. I don’t mean to demean the Alpine Club series of regional guide books, but they seemed more to give an idea of routes that were out there, and the start of a process of more exhaustive (and hard to come by) research to actually do the route, or go out with a more experienced and knowledgeable partner. There seems to be a gap for a good select guide book, where a small number of routes are fully described, including approach and descent, and the full route itself! It’s a cliche here than a hard long route might have a 2 line description.
The absence of such a book is probably partly the lack of demand of numbers to make it financially viable, but I think it is also cultural to an extent: the unwillingness to have too many people knowing your favourite routes, and the need to “earn” your right to do them.
This is starting to change, and there have been some great recent regional guides, like the fairly hot of the press Aoraki Tai Poutini guide book by Rob Frost, and Guillame Charton’s and Mike Dunn’s Queenstown guide.
Tramping is better provided for; I’d recommend South Island Weekend Tramps by Nick Groves, and for a great local guide for my neck of the woods, Canterbury Foothills and Forests.