The Great Pyramid of Giza is the oldest and largest of the three pyramids in the Giza pyramid complex bordering present-day El Giza, Egypt. It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact. 
The ancient builder technology is evident in the construction of the original Great Pyramid during the Golden Age, pre-Atlantian Cataclysm, which was constructed as a harmonic resonance device to transmit a range of powerful frequencies and subtle energies throughout the Planetary Grid Network. The Great Pyramid was not designed to be a burial chamber.
Spiritual Ascension Chamber
Multiple millions of years ago, the Galactic Federation worked closely with the Sirian High Council to serve as a Guardian race that would help to support the seeding and evolution process of the planet earth in its lowest density, the first Harmonic Universe, also called the third dimensional timelines. The Great Pyramid of Giza was built as a harmonic resonator chamber within an interdimensional portal system in which visiting space craft could time travel and access the earth plane very quickly, especially if intervention was needed. During the cycle in which the Great Pyramid was built during pre-Atlantian times, the Galactic Federation was tasked to protect the Stargate portal and the ascension chamber within it and to intervene in case of an attack from hostile intruders such as the Annunaki resistance. The Great Pyramid was a mystery school for the Blue Flame Melchizedek spiritual ascension program and to accelerate DNA assembly for portal passage through the Inner Earth portal that was under the Sphinx. Some factions of the Annunaki Melchizedeks became patriarchal and had disregarded the Law of One teachings. They became increasingly hostile when they were forbidden access into the ascension chambers and not allowed in the Great Pyramid. Thus, they organized a larger group resistance in Atlantis with the plan to explode the protective force field via setting off explosions in which to take control over the Giza Stargate, and to achieve their goal they enlisted the support of the sympathizers that were in the Galactic Federation as many were originally from the Annunaki lineages that felt they were being unjustly discriminated upon. As a result of the infiltration that occurred from Sirius A, the Jehovian Annunaki took control over the Galactic Federation and the Ashtar Command joining the Luciferian Covenant and planning the final stages of the Atlantian Cataclysm with the purpose to eradicate the earth's historical records and technological knowledge, sending the earth's inhabitants back into the dark ages.
The Galactic Federation works with the NAA groups towards world domination and are behind the mind control propaganda that the Annunaki are the Gods of the earth and this Solar System, promoting themselves as the divine angels returning to help humanity ascend, to seduce the earth population into subjugation to their New World Order enslavement agenda. 
Geographical Center of Earth
Giza is the reference to the demographic area of Egypt that is the 4th dimensional planetary stargate and diamond heart complex or Solar Temple that was a primary target of total invasion by the NAA, before, during and after the Luciferian Rebellion, in order to gain full spectrum dominance over the Sol portal, and control access into Mars, install Checkerboard Mutation, as well as take position for total earth domination during the Ascension Cycle. This location is also the geographical center of the earth body.
Egyptian History Erased
Thus, true and accurate Egyptian history was replaced with the Black Sun agenda of inserting the Egyptian Pantheon of Gods, along with their Black Magic rituals, that were to be enforced by the installation of the Setian King lines, Hyksos and the Amun Snake Priesthood. These groups in the Middle East would eventually integrate into the Greek Mystery Schools and further evolve into the corrupted patriarchal lineages of the secret societies that formed as the Knights Templars and Freemasons, some using the image of Akhenaton as their Luciferian high priest for enacting the blueprint for the New World Order. This is an inside joke to the Galactic Federation, to defame his image and make a mockery of his life. Akhenaton was/is a Krystic being serving the Law of One and Reclamation of Christos Mission, attempting to negotiate with these rogue Annunaki groups to allow humanity to ascend in the 2012 window without interference. His negotiations to enter into a peace treaty failed, shortly after he was murdered a heretic king by a family member, and thus branded as a Luciferian high priest to the Illuminati hybrid lines.