Brimstone Dragon was the name given to a specific Dragon that was active during the time of Tantalon of Gallantaria. The Dragon, at the time of Tantalon, was plundering wealth from the Whitewater Valley of Gallantaria. The Brimstone Dragon's lair was in the southern reaches of the Cragrock Peak foothills, a day's march north from the town of Klisdon in Gallantaria. This area of the Cragrock Peaks is known as the Dark Cliffs. What was the lair of this dragon is a shallow but enormous cave.