Troll Fens
The lands between the Cold Run and Nether Ghyll including the Dim Forest have long been the domain of the northern trolls. As evil and voracious as their southern cousins in Sandal, few travelers have ever attempted to enter the domain of these creatures. For centuries, the trolls of this frozen region ranged south to hunt orcs and goblins for food. Most recently, an accord between Gruumsch and the trolls has been reached. The trolls provide troops, few in number by devastating in power, to Gruumsch's army in exchange for magical items, gold, and human, dwarven and elven food.
The chill mists of the Troll Fens, located against the shoulders of the Shadowyarn Mountains at the head of the Nether Ghyll, cloak a place of unnamable horrors. The orcs carefully hedge the place with watchtowers and keeps, and strong patrols constantly ride the verges of the southern end of the Troll Fens to watch for unwelcome visits from the monsters within. As its name implies, the fens are infested with particularly huge and vicious trolls in numbers.