Kingdoms of the wall
Each year twenty men and twenty women brave death and insanity in order to reach the Summit, a place where humans have the opportunity to learn directly from the gods. Poliar Crookleg has waited his whole life to go on the Pilgrimage to Kosa Saag. With his childhood friend Traiben, he is determined to be one of the few who return sane and filled with knowledge. But what the gods have to say may shatter the very fabric of the people's beliefs. Join Nebula and Hugo award-winner Robert Silverberg in his science fiction masterpiece KINGDOMS OF THE WALLS.
Novel, Fiction, Science Fiction, Mountain Climbing in Fiction, Pilgrims and pilgrimages
Robert Silverberg
Robert Silverberg is an American author, best known for writing science fiction. He is a multiple winner of both the Hugo and Nebula Awards.

Silverberg received a Nebula award in 1986 for his novella Sailing to Byzantium, which takes its name from Yeats' poem; a Hugo in 1990 for Enter a Soldier. Later: Enter Another; and in 2004 he was named a Grand Master by the Science Fiction Writers of America.

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  [1]: http://en.wikipedia.org/wiki/Robert_Silverberg