Central Ridge Line

From ROI Wiki

The Central Ridge Line is a prominent geological structure located smack in the middle of the Yigzan nation that stretches from the southern shoreline all the way north to the northern mountains and divides the nation in half east to west. It is made up of a string of rocky foothills and ridge lines connected together in a continuous wall of rock. It is along this line that the Yigzan were finally able to stop the relentless advance of the Gorg armies during the Gorg War.