Hells Gate Resvoir

is the first step in conquering the Tartarus System as it has long been a valuable source of raw materials for the Imperium. In order to further your goal of conquest, you must secure this vital source of life giving water, for without it, Portis Tartarus will become your tomb.
The massive edifice of Portis Tartarus (Hells Gate) Reservoir stands atop the only known water source of any abundance in the entire Southern Hemisphere of this arid, desert planet. Portis Tartarus