From the description:
"Riddley Walker is a brilliant, unique, completely realized work of fiction. One reads it again and again, discovering new wonders every time through. Set in a remote future in a post-nuclear holocaust England (Inland), Hoban has imagined a humanity regressed to an iron-age, semi-literate state—and invented a language to represent it. Riddley is at once the Huck Finn and the Stephen Dedalus of his culture—rebel, change agent, and artist. "
Split reviews on this offering: overall 4.3 stars on 85 reviews but 8 one star and 4 two star. 254 pages (a bit short) and more expensive than usual.