Pyramid of Pepi I. The pyramid was 150 cubits per side at the base and 100 cubits high (78.75m sq x 52.5m high) The core was made of small, locally quarried stone and debris fill which was clad in layer of white limestone. The limestone has since been taken, exposing the core which has slumped. The inner chambers followed the same plan as previous 5th Dynasty pyramids, they were formed in a 'pit and ramp' and the pyramid was built above.