Here gamers enter the four tombs of the Sith Lords in the Valley of the Dark Lords. This is one of the tombs players enter, where they meet this Sith Lord's spirit.
Ajunta Pall: a male Human Jedi Master, who was a member of the Jedi Order during the First Great Schism.
Just as he made his scholarly interest, Pall found the secret to create and shape life. The Order, fearful of its power, deemed it an abomination and sought to erase all practice of it. There was a lot of tension.
Under a barred order, which the Order forbade him and his followers from the teachings Pall found, Pall became enraged. He declared war on the Order, beginning a century-long conflict known as the Hundred-Year Darkness.
Now eventually High General Pall was stripped of his weapons and his rank, as were his Dark Jedi followers. They were exiled from the space in the Galactic Republic. It was only something started.
Through their travels, Pall and the Exiles found Korriban, but they also found a Force-sensitive species known as the Sith. While relatively primitive compared to the Dark Jedi, the Sith were quite creative in their knowledge of the force.
As the Sith, under their King Hakagram Graush, initially resisted the Dark Jedi's attempt to obtain their knowledge and subjugate them, Pall managed to recruit the King's Shadow Hand to his side. This resulted in Graush betrayed by the Dark Jedi. Pall personally executed Graush with his own sword.
Pall, afterwards, found the primitive Sith bowing before him. Pall was named the Dark Lord. In doing so, Pall became the first Dark Lord of the Sith to found the Sith Empire and expand it to other worlds. The Sith took over the planet Ziost, creating it as their capital and Pall's new home.
After Pall's death, which he served as Emperor for many decades, his Empire lived on. Pall's body was moved back to Korriban, where a massive tomb was built and his body placed in what would become the Valley of the Dark Lords. The tomb was built of stone.
Little after his physical death, Pall's spirit remained in the tomb. Over the centuries, he questioned his actions as Sith Lord and the downfall the Dark Lords experienced at each other's hand.
Long into a millennia, during the end of the Jedi Civil War, Revan came looking for Ajunta Pall's sword. Pall told Revan his thoughts and who was really responsible or nearly leading their Order to death. Revan convinced Pall to let go of his pain and return to the light. Pall did this and his spirit was redeemed, allowing him to becoming one with the Force and find peace at last. There was nothing left of the body but bones and sand.