The map is for Alfheim, which is part of the "The Nine Worlds" AH setting that appears in both GURPS WWII: Weird War II and GURPS Infinite Worlds: Lost Worlds. For those without either book - and you should own...
I slipped the album that this is from in the queue for the CD player for last night's Christmas caroling party: ...alas, my friends are wise to my tricks by now. They didn't bat an eye.
Via Schlock Mercenary: this Minimus thing really is a rather clever game system. My wife is already thinking about how to incorporate the relationship generation between PCs into her own gamemastering.
