Jylkurfyk, on the Broadwall

"They opened their mouths, and from their throats came a secret song both great and terrible. Their titanic voices joined together, each voice singing a hidden chord and each chord shaking the earth. Wind and snow and blizzard flew from their jaws, and in a few brief years the doom-song of Atmora had reached to the shores. The fertile valleys became hard and barren, the basins became alabaster in ice, the hills were lost in drifts of snow, the pastures were hard-packed and infertile, the forests were filled with skeletal trees, the meadows expansive tundras. The oldest of giants froze in place, each now an enormous icy fang-tower; one in every direction. Nearly every Giant froze to death, and many more Men were buried beneath the sudden snows."