I always wondered why this blob of a land form never made it into Greyhawk canon, maybe except that it was cut off in production of the Darlene map. It's definitely not too far away to be discovered, unlike the many islands strings to the far south. It's on the Icy Sea so I can imagine its not easy to get to, but I find it unlikely the hardy Cruskii raiders who go all the way west to Blackmoor and the Land of Black Ice cannot reach this place right above their home. So as part of a long forgotten plot, I had the players venture to Isalund "the Dark Isle". Yes, Islaund, I admit that was an unfortunately lazy name for an island, but I've yet to hear anyone else name this island? If someone has info on the island or their own name, I'd love to hear about it in the comments section.
Observations and memories:
Isalund is called the "Dark Isle" I believe because I set an ancient relic of Tharizdun here, and due to whatever effects it had, the island was considered cursed, that's why no one hardly ventures to the place. I don't yet recall what the item was (or maybe it was an avatar?), but Big T is everywhere!
On the south shore is a dot of a village named "Dokyard". This cove settlement is probably the only accessible part of Island.
I used color to show elevation. Isalund is a rocky spur overall but still rather broad enough for more settlement. I'd say it's about average 210 miles by 90 miles in size. Quite big.
To the northeast I have an arrow pointing to "the Frozen Desert". I assume this is where the Icy Sea becomes one massive ice sheet melded into the arctic circle of Oerth. I'd love to see what others have done with globes of the planet and where Isalund fits in this sea zone.
Straight north from Dokyard up an icy stream is a marked fort/tower/keep. I really don't recall what this was and it regrettably isn't labelled. This is surely the cursed location the PCs were trying to find as it's conveniently centered in the Dark Isle. If I find more on this place I'll post an update.
The label at the very bottom margin says 180 miles north of Hrafknel. I don't know anything about this town except it's a Cruskii settlement. My Thillonria maps have many custom settlements like this, including the home of my friend's famous barbarian war hero Valkaun Dain. Maybe someday I'll develop these parts again...
That's all I got on Isalund. This isle is too big to go unnoticed in the Flanaess. I hope others have noted its existence and have tried to use it besides me. Enjoy!