The internal construction of the "Second Pyramid" is less elaborate than that of the Third, but not very different. Two passages lead from the outer air to a sepulchral chamber almost exactly under the apex of the pyramid, and exactly at its base, one of them commencing about fifty feet from the base midway in the north side, and the other commencing a little outside the base, in the pavement at the foot of the pyramid. The first passage was carried through the substance of the pyramid for a distance of a hundred and ten feet at a descending angle of 25° 55', after which it became horizontal, and was tunnelled through the native rock on which the pyramid was built. The second passage was wholly in the rock. It began with a descent at an angle of 21° 40', which continued for a hundred feet; it was then horizontal for fifty feet; after which it ascended gently for ninety-six feet, and joined the first passage about midway between the sepulchral chamber and the outer air. The sepulchral chamber was carved mainly out of the solid rock below the pyramid, but was roofed in by some of the basement stones, which were sloped at an angle. The chamber measured forty-six feet in length and sixteen feet in breadth; its height in the centre was twenty-two feet. It contained a plain granite sarcophagus, without inscription of any kind, eight feet and a half in length, three feet and a half in breadth, and in depth three feet. There was no coffin in the sarcophagus at the time of its discovery, and no inscription on any part of the pyramid or of its contents. The tradition, however, which ascribed it to the immediate predecessor of Men-kau-ra, may be accepted as sufficient evidence of its author. [Illustration: SARCOPHAGUS OF MYCERINUS.] [Illustration: SECTION OF THE SECOND PYRAMID.]