Mastabat al-Fir'aun

The Mastabat al-Fir’aun is the grave monument of the ancient Egyptian king Shepseskaf, the last king of the Fourth Dynasty documented to date. It is located in South Saqqara halfway between the Pyramid of Djoser at Saqqara and the pyramids of Sneferu, the founder of the Fourth Dynasty, at Dahshur. The structure is located close to the pyramid of Pepi II, a ruler of the Sixth Dynasty. The stone quarry for the structure is located west of the Red Pyramid of Sneferu.

Source: Wikipedia