PLANET OF EXILE
The Earth colony has been stranded on distant Eltanin for six hundred Terrestrial years and the lonely and dwindling human settlement was feeling the strain. Every winter - as season which lasted for fifteen of our years - the Earthmen had neighbors. These were the humanoid hilfs, a nomadic people who only settled down when they burrowed in for the long cruel cold spell.
Yet the hilfs feared the Earthmen, whom they thought of as the farborns, and their fear kept the lost colony lonely. Nevertheless both hilfs and farborns had common enemies: the hordes of ravaging barbarian Gaals and the eerie preying snowshouls. And in the last terrible winter, the only hope of hilf and farborn was to join forces or be annihilated.
PLANET OF EXILE is by the author of THE LEFT HAND OF DARKNESS and displays the same planet-creating brilliance that won its author the highest awards of science fiction writing.