What's hidden inside Pepi I Pyramid in Egypt?

There is something interesting about Pepi I pyramid. Other than it's sizable pyramid complex, there is a hidden gem underneath this pyramid.

This video explores this humble pyramid situated out in the middle of a desolate area. Revealing strange clues hidden in the burial chamber, a rare find that was transported and assembled on site. But from where did this find come from?

Links:
photos courtesy of Men-nefer-Pipi - The perfection of Pepi is Established - Pepi's splendor is enduring. The Pyramid of Pepi I
http://egyptphoto.ncf.ca/pyramid%20of%20pepi%20I%20faces.htm