The sentence actually breaks a couple of common patterns in English that have nothing to do with preposition stranding.
Firstly, in English (but not all languages), speakers tend to postpose relative clauses even though that means the relative clause doesn't surface right next to the element it modifies. So in a case like this:
(a) John bought the cups that Daniel had been looking for for him.
(b) John bought the cups for Daniel that he had been looking for.
word order (b) is more natural. This isn't really to do with the postposed preposition: if you substitute "had been wanting", (b) is still generally the more common/natural word order.
Then, perhaps conversely, in so-called "picture" expressions ("a photo of Jane", "a book on flower arranging", "an impression of disgust", where you can't say "*a flower arranging's book", "*a disgust's impression" etc), it seems a bit more usual to keep this expression together. So it is odd to separate "about 'Down Under'" from "book" in this way, even ignoring the other syntactic features of this sentence.
Whilst neither of these patterns is a 'hard and fast rule', they're two unusual features of syntax which the sentence has.
Or in other words, the unusualness of this sentence isn't per se to do with the postposed prepositions.