The Cadsoline River is a major river found running through the Verdant Plains in Impatria. It forms in the eastern Skyfract Mountains near the town of Ruktan's Forge, flowing south along the Cadsoline Peninsula and into the Sea of Kings.
The Cadsoline river and its many tributaries are what cause the Verdant Plains to be so fertile, allowing for many kingdoms and later the Holy Empire of Acolytius to feed a growing population. Many cities have also taken advantage of the easily navigable waters of the Cadsoline, the most famous being the Empire's capital of Vatepor.