I sat on this book for years; I have no clue why...somehow (for no reason whatsoever!) I associated it in my mind with Deliverance...which I far-more-than-hated and with which it has NOTHING in common. (Well, horror...but people-behavior-horror and sci-fi-monster-type horror don't belong in the same universe for me. They need to be completely different words.)
So...I liked it a lot. To the extent that I have bought the two next in the series for my vacation.