Frozen Reaches

From King's Quest Omnipedia

The Frozen Reaches lie at the top a volcano to the north of Daventry. In the center of the cone is a lake of icy water. This land is inhabited by Snow Nymphs (a female race), Gryphs (and avian race), and Ice Orcs (a terrible race). It is one of the highest known locations in the world, it has become known as the place where the earth meets the sun.

It is most likely part of the Great Mountains range that divides the the continent into 3 main parts.