The Bracada Highlands is the highest point on the continent of Antagarich. The frozen location created the ideal living space for the azure dragon, and the large population of the beasts made the highlands very dangerous.
After freezing again it became the valley of the titans. After Mutare dominated Nighon the highland thawed and and the azure dragons joined her army. Their nesting sites were destroyed by Dracon, but Mutare had the azure dragons nest elsewhere.