Book 3 of the Second Chronicles of Thomas Covenant
Swept far to the north, Thomas Covenant and Linden Avery must embark on another dangerous journey, never knowing whether the magic they bear will be enough to reverse the corruption wrought by Lord Foul. Together, they are drawn back to the Land - to the fulfilment of prophecies, to war and loss, and to a stunning final confrontation that will unleash powers far greater than any this world has witnessed before.
Stephen Donaldson