The Grail Mountain is a large mountain on the Island of Garlan within which is one of the seals of Valmar. At the site of the seal is a large sword. which the locals have come to see as an idol given their reverence for sword-fighting.
The road to the idol along the mountainside was once vibrant with many coniferous trees lining the path. After the breaking of the seal, great spikes drove out of the mountainside and a dark ooze seeped out onto the land, killing the trees and poisoning the earth.