Disaster / Destruction
In an attempt to prevent the approaching forces of The Kingdom of Somercrag from siezing the land between The Witwell Mountains and The Redford River, the forces of The Kingdom of Irogonie, including a number of Dualists, triggered the effects of The Black Walls surrounding the cities of Fairdeep, Stathgow and Southmarket, unleashing Black Clouds that hung over those cities, making it dangerous to impossible to enter them, and killing the population immediately.
Because of this, these cities became known as The Black Cities.