The Frozenfar is the coldest, most remote region of the North. It comprised the Spine of the World mountains; the frigid lands to the north and west; including Icewind Dale, the Cold Run, the icebergs of the Sea of Moving Ice, and the northeasternmost part of the Trackless Sea.
The Frozenfar does not have definable boundaries. The term "Frozenfar" is used by people across Faerûn to include various areas. For example in Amn and the Inner Sea, the term "Frozenfar" referred to the city of Mirabar and everything north, including the Spine of the World mountains.
However in the North, the term "Frozenfar" referred only to the lands north of the Spine of the World. That was among the most commonly accepted usage.
Yet others used "Frozenfar" to refer to all the lands of the North within which individuals could literally freeze to death during their travels.