At the northwesternmost border of the Great Ratholos Empire, a grand rift existed, splitting the lands of the Great Ratholos Empire from the Raging Tempest Kingdom, one of the seven witch kingdoms of the north.
The grand rift wasn't naturally formed but created by the early conflicts between the seven witch kingdoms and the Great Ratholos Empire after the Holy War against Gehenna ended.
After all, the vast land of the seven witch kingdoms used to be an undeveloped wilderness divided by countless minor feudal lords prior to Gehenna's appearance.
In the original history of Pangea, many countries had sent troops to join the war efforts to put a stop to Gehenna's invasion. Many witches had sacrificed themselves in the Holy War, but even more so for men.