Something of a lost sf classic. I stumbles across this at a used bookstore and found it to be compelling and surprisingly well written. I figured this had to be the work of a well established author, but no, Aiken wrote one other book a decade earlier and never any more, as far as I can tell. This one was published in paperback only and tragically, soon faded into out of print obscurity.
The Wall at the Edge of the World deserves to be in print. I've always thought if I was rich I'd open a publishing house specifically to bring my favorite obscure and forgotten books, albums, TV shows etc. back to light, and this is one of the first books I think of in that scenario. ( )