Castle Avernus Lower Laboratory
At a glance
A hidden laboratory and study reached through an animal-dug tunnel from the Bone Chambers. Its shelves hold spellbooks, components, experiments, and an adjoining storeroom of unsettling preserved specimens.
Known facts
- The party reached it after escaping the endlessly replenishing skeleton horde in the Bone Chambers.
- An undead spirit summoned from Carver’s scroll scouted the tunnel and returned unharmed before the party entered.
- The room contains numerous spellbooks, magical components, experiments, and a single door to a simpler storeroom.
- The storeroom held preserved heads in glass jars; Ignatius thought one watched the party, and an eyeball on a shelf also seemed to stare outward.
- The party found and took a Ring of Protection, a slightly red-tinted Sun Blade, Bracers of Defense, two potions of greater healing, a green bottle of Sanguine Solution, a spellbook, and nearby writings covered in patterns and scribbles.
- Ratlike creatures scratched in a far corner and fled when Ignatius investigated.
- While the party searched, a dragon screeched above and the foundation shook as though something enormous had landed in a roost.
Current status
Visited. The party returned through the Bone Chambers to explore two nearby prison chambers. The laboratory’s purpose, its watching specimens, and the source of the dragon’s arrival remain unknown.