Caliath Mountain Range
The Caliath mountain range borders the kingdom of Caledonia to the west. The mountain chain is huge and imposing. It begins somewhere lost in the tundra to the north, and ends somewhere far to the south, with a few kingdoms between Caledonia and it’s ending point.
The mountains have long served as a natural border. To everyone’s knowledge, passing them is impossible. Aside from a few tribes living in the foothills, the mountains are uninhabited. Storms wreath the heights all year round, including the only known pass, and the crossing is viewed as deadly. Occasional explorers do not return.
The invaders that have overrun the kingdom claim to have come from over the mountains.