Exegol

Exegol (also spelled Ixigul in ancient texts) was a dark desert planet located within the Unknown Regions that, according to legend, was the hidden redoubt world of the Sith. It was occupied by the Dark Emperor Torvivum Zuskelgar and the Empire of Darkness sometime after the end of the Kids' Club War.

Exegol was used to hide the Immortal Armada, which was a fleet amassed by Zuskelgar and the Dark Empire, from where they planned to deploy their Star Destroyers/Dreadnoughts and establish a new Dark Empire. Exegol was the site of the final battle during World War III, which saw the ultimate defeat of the Coalition of the Red Star.

Description
Exegol was a dark, barren, and rocky planet with desert flats. Its dry conditions, combined with the rubbing of dust particles in its atmosphere, created enormous static discharges that appeared as lightning strikes from the planet surface. The desolate world was covered with enormous fissures that reached deep into its crust. These were excavated by Sith loyalists who were attempting to reach a transportative vergence they believed to lie beneath the surface.

Exegol 's nearby space was littered with the remains of megafauna, resulting in a cloud of red gas and stardust to form before the world, posing a navigation barrier.