 The Riverlands are the populous and fertile areas surrounding the forks of the river Trident on Westeros.While they form one of the nine regions of Westeros, the Riverlands' central location and geographic features made the region an inter-kingdom battle zone that changed hands rather than becoming its own 'eighth' kingdom of the Seven Kingdoms.Centrally located between the Westerlands, the Crownlands, the Vale, and the North and lacking the natural defenses of other regions, they have seen frequent warfare.