Lord Foul's Bane is a 1977 fantasy novel by American writer Stephen R. Donaldson, the first book of the first trilogy of The Chronicles of Thomas Covenant series.

He tells Covenant to deliver this information to the rulers of the Land, the Lords who study ancient lore and have sworn the "Oath of Peace" at the Capitol city.

In the end, at the cost of the deaths of many of their companions, the Lords succeed in penetrating Mount Thunder and seizing the Staff, temporarily securing peace for the Land.

Covenant destroys Drool Rockworm and saves the surviving members of the party by using the wild magic of his ring to summon the Fire-Lions, creatures of living lava which issue from the peak of Mount Thunder, although he does not fully control or even understand his power.

The Ultimate Encyclopedia of Fantasy described Lord Foul's Bane as a "more original and interesting work" than its contemporary, The Sword of Shannara by Terry Brooks.