Erthring Cycle Series by Wayland Drew

Rites Of PassageWhat began as just another Alcheringian raiding party—sanctioned by the chief and approved by the Gods_ had gradually become a war to the death.But nothing was quite as it seemed to the primitives of Norriya, for forces they could hardly comprehend were influencing events from offstage. More than tribal honor was at stake—the future of Man was being decided and time was running out!

The End Of The EndTime had run out for the twentieth century, and civilization disappeared in radioactivity, heat, and fire. But farsighted men had hidden a colony to help Man recover from the War—and, perhaps, even prevent future ones.Yet after several hundred years, time was running out for the colony as well—Yggdrasil's supplies were almost gone, the tribes she was to teach refused to learn, and nomads daily raided her borders... moreThe End Of The EndTime had run out for the twentieth century, and civilization disappeared in radioactivity, heat, and fire. But farsighted men had hidden a colony to help Man recover from the War—and, perhaps, even prevent future ones.Yet after several hundred years, time was running out for the colony as well—Yggdrasil's supplies were almost gone, the tribes she was to teach refused to learn, and nomads daily raided her borders.And as shortages became more desperate, radical solutions were proposed by those who had lost sight of Yggdrasil's goals. If something wasn't done soon, Yggdrasil would be reduced to using the same methods that had previously threatened the planet ... less

THE CIRCLE UNBROKEN...Late in the Twentieth Century farsighted men had hidden the colony Yggdrasil far underground. From there it could guide: the survivors of the Final War toward a true civilization, one that would never settle its problems on the battlefield.Yet after just two centuries, tribes were in revolt, high-tech supplies were running low, and the colony's leaders were planning to enslave aborigines so that Yggdrasil could continue to live in the luxurious fashion of the ancients... moreTHE CIRCLE UNBROKEN...Late in the Twentieth Century farsighted men had hidden the colony Yggdrasil far underground. From there it could guide: the survivors of the Final War toward a true civilization, one that would never settle its problems on the battlefield.Yet after just two centuries, tribes were in revolt, high-tech supplies were running low, and the colony's leaders were planning to enslave aborigines so that Yggdrasil could continue to live in the luxurious fashion of the ancients.But a ragtag band of mutants and outcasts had other ideas. And one man among them knew the secret of the ancients' power... less