Korriban shall be as it always was. A graveyard for the darkest of the Sith Lords, still whispering within their tombs. It shall always be a source of evil, spawning threats throughout the millennia.
Korriban was originally home the the species, Sith. Later, when the Sith species moved off of the planet, it became inhabited be Dark Lords. This is a home world to the Sith Order . Dark Lords have been buried hear for many centuries. It is a place of the dark side of the force.
More on Korriban.
More on the Sith Order here on this site.