Located atop a glacier just southeast of the College of Winterhold, approaching it from a path to the west allows access to the altar.
Rundi is one of the missing apprentices from the College of Winterhold. Speak to Phinis Gestor at the College to learn of his disappearance. His altar consists of a summoning circle with three active Frost Runes that will explode if approached.
- Originally, Bethesda intended there to be a quest to find the missing apprentices. There is no quest in the game, and when you find them, Phinis will not change his dialog. See: Lost Apprentices.