Goji River (Goh- Gee)

Describe a geographical feature that acts as a dividing line between nations or geographical environments   The Goji river is a highly fertile, highly unpredictable, and extremely managed river that creates the border between Rentar and Gardune. Serving as the core of Gardune's economy, travel, and culture, this river is often called the "Heart Vein of Gardune".    Originally, this river was subject to extreme and wild changes due to the sediment of the area which lead to the entire Gardune Plains being somewhat impossible to inhabit, however, early Gardune Emporers used a combination of magic and physical labor to tame the great river. Now, its more predictable route has led to a period of long stability and wealth.    Legend has it that the Goji delta dumps into a vast underground cave, filled with gold and strange creatures unlike anything else.