the Sundered Hills

Three days march northeast of Wall, lie the Sundered Hills. The area got its name from the broken appearance of the landscape. It looks like great mountains were bashed to pieces by an immense hammer.
Legend has it, long ago Krolos, the Lord of Battle, went to Vaul, the Maker of Things. Krolos asked Vaul to make him a great war hammer that would be the envy of all who beheld it. Vaul agreed, and labored many days and nights to complete it. When the hammer was done, Krolos stared in wonder at its beauty and might. Vaul asked for payment. Still in awe, Krolos said he would pay anything for it. Vaul asked for the hand of Valena, goddess of love, and sister to Krolos.
Snapped from his trance by these words, Krolos laughed and refused Vaul his payment. The god of the Forge was enraged and snatched back the hammer. The two fought.
Their battle spilled into our world. They wasted the land in their struggle, and thus the Sundered Hills were born.
These days, the Sundered Hills lie Beyond the Wall, and are rumored to be firmly in the hands of the Blue Moon Hobgoblin tribe. The Blue Moons are well organized and disciplined. It is only a matter of time before they attempt a raid on Wall itself.