The Tomb of Hakagram Graush was a Sith mausoleum located on Korriban. It was the final resting place of the late King Hakagram Graush, around the year 6900 BBY. Millennia later, Darth Plagueis entered Graush's tomb in hopes of facing a Sith spirit. Apparently, Plagueis encountered no ghost in this tomb, to his great disappointment.
- Book of Sith: Secrets from the Dark Side