Forty Thousand in Gehenna by C.J. Cherryh - Jan 1986

Mandarin, Jan 1986. Paperback. If anything this is more ambitious than Cyteen, though that novel will remain the greater one because of its scope and depth, the latter of which this novel tends to lack at times, though Cherryh is still better than most science-fiction writers. The events of this novel are referred to in Cyteen and that planet is still a big player during the course of events, but Cyteen was also a big part of Downbelow Station and you didn't need to read Cyteen to understand that one either. What you do need to understand is that this is one strange book, the basic plot is that colonists are sent to Gehenna which has these strange lizards and then they're essentially abandoned there and when people find them again this entirely odd culture that is hard to understand has grown up to live with the lizards. Most of the book is devoted to explaining the way this strange culture arrives at what it is, and that is probably the most fascinating part. The encounters between the scientists and the Gehennans are also classic moments and the characters are all well defined even if because the novel takes place over so many years they tend to pop in and out, so don't get too attached to many of them, because they don't stick around for too long. Overall definitely one of her better novels and on par with both Cyteen and Downbelow Station, it may not have the greatness of the former or the sustained intensity of the latter but in its exploration of culture and how it can be formed, Cherryh shows that she has few peers in the science-fiction world.