The Blazing Chief (Deschembine Trilogy)

For untold ages, the refugees from the land of Deschemb have lived secretly beneath the surface of human society. Now modern civilization crumbles as their ancient feud boils to the surface. As chaos and brutality engulf the world, strange alien forces reshape the lands for a new beginning...for whoever survives.
In the frozen Canadian wastes, the United Deschembines take shelter in an abandoned military base, under the leadership of Jesse Karn, Zane Rochester, and Sally Coscan.
In the Louisiana swamps, Rob and Remelea press towards the ruins of New Orleans, for a final confrontation with Talino.

In Brattleboro, Vermont, a long-forgotten doorway opens, to a land beyond living memory, where two lifelong enemies must journey as allies, to save two worlds, or destroy them.