Barren Region

From King's Quest Omnipedia

The Barren Region is north of Daventry, it lies above the Gnome World on a plateau at the base of an ancient volcano. A hot and dry place with rivers of lava, the Barren Region is no place for Man. It is populated by friendly weirdling traders and metal-working hill people who have now come upon hard times as a result of the cataclysm. Years ago there was a regular trade with the people from the Ice World who live at the top of the volcano.

This is likely part of the Great Mountains range north of Daventry, and separates Daventry from Serenia.