From publisher blurb:
This setting was used in the F series and was used as an area for multiple adventure opportunities as a separate crossing of the Border Mountains. This mountain area has several travel sections to get from the civilized area to the frontier. With a multitude of side adventures this area helps mid-level adventurers increase their experience point base. In the Filbar campaign it was commonly used to get from FT04: Havendale to FT06: Arcanum College and Cordicstown.
This adventure setting was designed for 1st/2nd Edition AD&D for the Filbar Campaign for mid to upper level groups of adventurers. This adventure is easily adaptable to most any game and system. Save yourself some time and utilize it for several one shot adventures or a continuing campaign setting!