Catacombs
From Arindal Wiki
The Catacombs have been dug below the graveyard. No one knows who built them, but nowadays they are haunted by zombies and skelettons. Adventurers should keep in mind which way they went if they don´t want to get lost in the depths never to be seen again.
But not only the undine are dangerous, several rooms are filled with nearly unrecognizable trap doors. If you stumble in one of them you won´t survive the fall.
Mages will be interested in lots of book shelves and altars, others in the experience,which can be gained here. Some may only pass through to get into the blooddungeon, others may want to buy a skullcap.