Justice leads half of the group through Gehenna until she reaches a magically sealed door. She opens it using her magic, exposing the archives within. Though the books and artifacts within are in pristine condition, the archives have been converted into a monster’s den.
It’s filled with rotting corpses, and there’s a huge opening in the floor used by some burrowing creature. There are also three guardians watching over the archives, Gatekeepers who emerge from the shadows and attack.