The pyramid of Neferefre, also known as the pyramid of Raneferef, is a 25th century BC unfinished pyramid complex built for the Egyptian pharaoh Neferefre of the Fifth Dynasty. Neferefre's unfinished pyramid is the third and final one built on the Abusir diagonal – a figurative line connecting the Abusir pyramids with Heliopolis – of the necropolis, sit…The pyramid of Neferefre, also known as the pyramid of Raneferef, is a 25th century BC unfinished pyramid complex built for the Egyptian pharaoh Neferefre of the Fifth Dynasty. Neferefre's unfinished pyramid is the third and final one built on the Abusir diagonal – a figurative line connecting the Abusir pyramids with Heliopolis – of the necropolis, sited south-west of Neferirkare's pyramid.