The Fortress of Gold — Stephen L. Nowland

Aislin Ballard and her companions journey south in pursuit of the man behind the assault on her home town. Together, they must cross dangerous desert lands, brave bizarre magic and avoid clashing armies as they travel to the legendary mountain city of Aurumgaard. There, they may find clues to his location, but risk being swept up in regional events beyond their control, culminating in a confrontation that will test their resolve, forcing them to question how much they desire to see their quest through to its ultimate conclusion.