Ninurta (Nimrod) found inside the pyramid...
"....Escorted by the Chief Mineralmaster, Ninurta inspected the array of "stones" and instruments. As he stopped by each one of them, he determined its destiny - to be smashed up and destroyed, to be taken away for display, or to be installed as instruments elsewhere. We know of these "destinies" and of the order in which Ninurta had stopped by the stones, from the text inscribed on tablets 10-13 of the epic poem Lugal-e. It is by following and correctly interpreting this text that the mystery of the purpose and functions of many features of the pyramid’s inner structure can be finally understood.
"Going up the Ascending Passage, Ninurta reached its junction with the imposing Grand Gallery and a Horizontal Passage. Ninurta followed the Horizontal Passage first, reaching a large chamber with a corbelled roof. Called "vulva" in the Ninharsag poem, this chamber’s axis lay exactly on the east-west center line of the pyramid. Its emission ("an outpouring which is like a lion whom no one dares attack") came from
a stone fitted into a niche that was hollowed out in the east wall. It was the SHAM ("Destiny") Stone. Emitting a
red radiance which Ninurta "saw in the darkness," it was the pulsating heart of the pyramid. But it was anathema to Ninurta, for during the battle, when he was aloft, this stone’s "strong power" was used " to grab to kill me, with a tracking which kills to seize me." He ordered it "pulled out... be taken apart... and to obliteration be destroyed."
Among other features, Ninurta encountered:
"....Whereas in the narrow passages only " a deem green light glowed," the Gallery glittered in multicolored lights - "its vault is like a rainbow, the darkness ends there."
The many-hued glows were emitted by twenty-seven pairs of diverse crystal stones that were evenly spaced along the whole length of each side of the Gallery.... each crystal stone emitted a different radiance, giving the place its rainbow effect....Ninurta’s priority was the uppermost Grand Chamber and its pulsating stone.... he reached the Antichamber of unique design...."There three portcullises - "the bolt, the bar and the lock" of the Sumerian poem - elaborately fitted into grooves in the walls and floor, hermetically sealed off the uppermost Grand Chamber: "to foe it is not opened...." But now, by pulling some cords, the portcullises were raised, and Ninurta passed through.
"He was now in the pyramid’s most restricted ("sacred") chamber, from which the guiding "Net" (radar?) was "spread out" to "survey Heaven and Earth...." It responded to vibrations with bell-like resonance. The heart of the guidance unit was the GUG Stone ("Direction Determining").... Ninurta ordered this stone destroyed: "Then, by the fate-determining Ninurta, on that day was the Gug stone from its hollow taken out and smashed."
Finally there was the Apex Stone of the Pyramid, the UL ("High As The Sky") Stone: "Let the mother’s offspring see it no more," he ordered. And, as the stone was sent crashing down, "let everyone distance himself," he shouted. The "Stones," which were "anathema" to Ninurta, were no more.
http://www.eridu.co.uk/Author/egypt/rivaldunn.htmlhttp://www.bibliotecapleyades.net/esp_piramide.htm#iniciohttp://www.mysteriousworld.com/Journal/2003/Summer/Osiria/