Set in the same future as the Jugo-winning Downbelow Station, but fully self-contained, this is a story on the classic theme of human underestimation of the alien. The 40,000 colonists on Hehenna are abandoned for political reasons. When the re-supply ships fail to arrive, the colony begins to collapse. But the real story is yet to come. - Over a period of 200 years, the descendants of the colonists who couldn't impose Terran conditions on Gehenna become a part of Gehennan ecology themselves, by entering a partnership with the planet's native intelligence -- the lizard like, burrowing calibans. The book has some small white dots on the text block.