The third pyramid on the ridge of Gizeh was built by Menkera, a successor of Khafra and fourth or fifth king of Dynasty IV. This structure is but two hundred and thirty-three feet at the base, and the slant height two hundred and sixty-two feet. The Menkera pyramid stands on looser soil than its more ambitious sisters, and the substructure is consequently of greater relative proportions. Part of the exterior consists of polished slabs of granite. The sepulchral chamber within is double, one apartment being behind the other. -Ridpath, 1885