Tomb of the Primes

The Last remant of that ancient age of Cybertronian history, The Tomb was created at the end of the Dynasty of Primes after one of theri number denied the group ruling and sought to take all of the Allsparks power for himself.

This act would have brought about the end of ancient Humanity, and in their defense the last six Primes fought in a great battle between The Fallen and his forces. Once the Primes reached The Fallen, they attacked him, and realising the strength valued Transformers would be too much for them in the long run (especially after fighting the rest of The Fallen's army) incapacitating him long enough to retake the Matrix of Leadership and went into hiding.

Later, they traveled to ancient Petra where they used their powers to seal away The Fallen in his dimensional sarcophogi on Cybertron, while forming a hidden Tomb around the around the Matrix of Leadership with their own bodies. For several thousand of years, the Tomb lay undistrubed, except when Humans living in Petra carved a Temple around the Tomb (although it is unknown why it was carved at the Tomb without the Humans from discovering it).

After heading to the Temple from guidence from the aged Seeker Jetfire, they came upon the Tomb after Skids and Mudflap exposed that was on the other side of the painted wall. After gaining access, the Human travelers found themslef under the gazing eyes of the long dead Primes, and in the center lay the Matrix upon the damaged hand a Prime (unknown if the damage was due to time or the great battle ages ago). When the human Sam Witwicky picked up the highly sought after relic, the device fell apart into dust, which he then used his sock to carry it back to the Pyramids in order to resurect the deceased Optimus Prime.

Currently it is unknown what happened to the Tomb after the Fallen was defeated, it was either left alone or was revisted later by a joint Autobot and Human group in order to respecfully study the remains in order to understand the ancient connection between the two races.