Darth Sidious's tomb

Darth Sidious's tomb was a burial place in the Great Temple, located in the Valley of the Dark Lords, Korriban. The tomb was constructed around 11 ABY when Sidious's final body was destroyed on Onderon.

Biography
Around 160 ABY, during the time when Charon created the Dark Empire, Darth Warrick entered the Great Temple, and found some original secrets from Sidious's tomb.