The Earlier Ages
Primeval
Agartha's heart, the World Tree, grows
The Hell dimensions were created with the help of Eblis, one of the Host
The Gaia Engines may have been created in this time by the Builders, also known as the Host
First Age: Age of Paradise
The Dragon was formed
Second Age: Age of Awe, Worship and Sacrifice
The Hell dimensions were cut off from Anima. Humans openly consorted with demons
A mystic prophesied the end of the world. He got the date wrong by 5 days.
Third Age: Age of the Engine
A previous civilisation made its home in Egypt, below the city now known as Al-Merayah, and in what is now known as The City of the Sun God
Cucuvea was born
The Custodians are created to protect Agartha, in a time of great technological knowledge
The Illuminati were probably formed in this age
The Sasquatch existed, though it is unclear if they originated in this age
The Time Tombs were built, when it was "possible to tweak the past without disrupting the foundations."
This Age ends with the fall of Atlantis