From The Heretic Knowledge Vault
A small city in Farrel, or at least in the Errant Road role-playing-game version of Farrel; as far as is known, it doesn't exist in the Poe-verse. In the world of Errant Road, it's significant as the nearest town to the Mountain of Madness amusement park, where all sorts of fun and games await the player characters -- probably.
Volkanenborg is inland, one or two days' journey north from Port Lorrel. As yet, relatively little is known about it, but be patient.