Lair of the Mad Dragon

The Lair of the Mad Dragon was the name given to the network of caverns located beneath the Sanatorium of Helm's Hold on the Sword Coast North. They served as the lair of the mad green dragon Chartilifax, protector of the Hex Locus and servant of the Prophet Rohini.

Description
The walls and floors of the caves were unnatural in appearance. They looked as if they were built from recently-mined stone with warped plant life that was alien to underground terrain. Some areas of the dragon's lair resembled more swamp than caves, with streams of blood-colored saltwater than flowed up the rocky walls.

The cave walls were granted some light by luminescent rock formations.

Flora & Fauna
Warped trees grew within the Lair of the Mad Dragon, forming at angles that were not typically found among natural plant life.