Rift

Human colonists have terraformed the planet Lithia, but now the green biosphere is unraveling. In its place is the old Lithia, toxic to some, preferable to others, including the orthong. Aliens. Monsters, some say.

Finding himself marooned on Lithia, young Reeve Calder is determined to make a home--even rebuild the planet. But he is a newcomer, soon to encounter the powerful forces already embedded in the transforming ecology.

There are the savage colonists, inhabiting the ruins of vanished ...