CHTHON

Granada paperback, 1983. Cover artist uncredited.

"THE LOWER DEPTHS... 

Aton's crime was a dreadful one. He had loved a Minionette. All the worlds of mankind despised and feared this almost mythical siren. But no creature anywhere could tell Aton why. 

In the brutally hot garnet mines of Chthon to which he had been condemned, Aton sought an answer. And when he could not find it he determined to seek it elsewhere.  

He had to escape. And no man had ever escaped from Chthon and lived. But the mystery of the Minionette had to be solved. Aton had to have his answer..."