Everfrost

From WoWWiki

This article or section contains lore taken from Warcraft III: Reign of Chaos, Warcraft III: The Frozen Throne, the manuals, and official bonus maps.

Hidden deep within the wintry crags of Everfrost is a realm of dark Nerubian horrors, protecting their frozen crypt from those that seek gold and wealth. Only when working together can these chilling nightmares be defeated and vanquished under ice forever.[1]