It would be useful if you could create a new sub-genre of post-apocalyptic fiction to collate works like this.
1 like: Darkki
An expanded edition of Riddley Walker was published in 1998.
A brilliant, unique, and completely realized work of fiction, Riddley Walker is set in a remote future in a post-nuclear holocaust England (Inland), where humanity has regressed to an iron-age, semi-literate state, represented by a language created especially by Hoban for the book.