The Sovereign Kingdom was the Base within the Infernus Gateway on the planet Droma, within the Blood System in Sith Space, in the Sofra Sector. It was a Hellish Fortress with impregnable walls, with little but molten lava and magma on the outskirts of the plains surrounding the structure. Black, twisted and metallic in appearance, it stood approximately 14,500 metres high above the wastes, and was located within the core of the planet, seemingly in a warped dimension within the planet's core.