The Winterwall Glacier is a truly massive sheet of ice stretching down from the Crown of the World into far-northern Avistan. A truly desolate and cold land, it is the home of frost giants, ice linnorms, white dragons, and even more dangerous creatures.
Its western terminus can be found in the northeastern edges of the Lands of the Linnorm Kings, where it begins to the east of the Stormspear Mountains. Its edge then dips southward into the frigid land of Irrisen, continuing in a generally easterly direction, until the Tusk Mountains in the Realm of the Mammoth Lords form its eastern border.
Two small settlements can be found at the southern edges of the glacier: the frost giant citadel of Holvirgang, and the gateway to the far-away continent of Tian Xia, Icestair.