هرم خنت كاوس 1

The pyramid of Khentkaus I or step tomb of Khentkaus I is a Fourth Dynasty two-stepped tomb built for the Queen Mother Khentkaus I in Giza. The tomb, built in two phases coinciding with its two steps, was originally known as the fourth pyramid of Giza. In the first phase, a nearly square block of bedrock, around which the stone had been quarried for the Giza pyramids, was utilised to construct her tomb and encased with fine white Tura limestone. In the second phase, most likely in the Fifth Dynasty, her tomb was enlarged with a large limestone structure built on top of the bedrock block.

This description is the opening of the Wikipedia article Pyramid of Khentkaus I, by its contributors, reused here under CC BY-SA 4.0 — which means you may reuse it from here on the same terms.