Cornelius Sigan's Tomb

Cornelius Sigan's tomb was located under Camelot and was discovered by the miner, Tom, tomb in the episode The Curse of Cornelius Sigan. Inside were a number of precious artefacts and jewels aswell as the soul of Cornelius Sigan concealed in a heart, set on top of his coffin. There was also a trap which one miner released and was immediately killed him. The Tomb was later broken into by a servant named Cedric who became possessed by the soul of Cornelius Sigan. The soul attempted to possess Merlin but he was able to return it to its setting. It was later sealed to prevent any from unleashing the soul.