In the Icewind Dale computer game, Kuldahar is a village situated in the Spine of the World mountains in the Forgotten Realms campaign world. Founded at the base of an impossibly-large oak tree, that radiates heat and thus creates a warmer climate than that typical of the region (at least within the immediate environs), Kuldahar has, for generations, been the place of residence of generations of "Archdruids".
In terms of the game itself, Kuldahar serves more or less as a central nexus- just getting there is the key goal for much of the early chapters, and later on it is necessary to frequently return before moving on to other parts of the game.
The background music heard whilst meandering about the village is one of the schweeeetest damn melodies heard in the whole game.