This structure is situated south of the main pyramid and is the westernmost of the three satellites.

The American archaeologist George Andrew Reisner speculated that either this pyramid or G3-b may have been meant for Menkaure's half-sister, Shepsetkau, the daughter of Meresankh III and Khafre.

[1] The pyramid was built during the Fourth Dynasty of Egypt, presumably for one of the wives of Menkaure.

The surface of the pyramid is stepped, consisting of four platforms that decrease toward the top.

The pyramid's base is 31.24 metres (102.5 ft) square, and its height is 21.2 metres (70 ft).