At the top of above pyramid, "the eye" is not the physical organ of sight, but the eye of the mind or the soul. This singular "eye" is called the "third eye" of clairvoyance in the Hindu religion, the eye of Osiris in Egypt, and the All-Seeing Eye in Freemasonry. (SOURCE: John Daniel, Scarlet and the Beast , Vol. III, pp. 6-7)
With regards to symbols of "secret societies", the above is probably the best known. Mainly this illustrates the organization of secret societies where the ones below don't know what the ones above know. Knowledge is power, so the ones at the top have the power, while the ones at the botton are controlled.
The Annunaki were the aliens who built the pyramids and probably, they were the first Freemasons as well.
However, little by little these secrets leaked out from sci/fi writers and whistle blowers.
The Freedom of Information act provided great data on President Kennedy's problems in getting CIA files on UFOs. The TV series, "Dark Skies" was based in part on secret government UFO documents.
There is also information on aliens from UFO abductees and individuals like Charles Hall and Thomas Costello who worked with aliens.
Like Star Trek's Captain Kirk, many of us want "to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no one has gone before".
Lets keep moving up the pyriamid. "Seek and you will find". "Knock and the door will be opened to you".