The Mother River is a large winding river that flows through the valley which takes it's name. The valley is nestled between two sandy deserts and is part of the larger landmass of the Great Desert. The slopes of the valley are largely gentle on the eastern side, and much more steep on the western. The land area of the valley is roughly around 1,099km from west to east, and 3,714km from north to south, making a total area of 4,081,686km2. The river itself winds throughout the entire region and carves out several "islands." Some of these disappear when the river itself floods due to tropical storms entering the bay to the south. The river is fresh water and teems with a multitude of fish.