Aeife, "Grinneal - Beginning"

Depicts the first five Aeons of Temuairian Gnosis.

Accumulated from:
Grinneal – Aeons Preserved beneath the Sea
Revelations of the Aosda
Seann-sgeul – Manuscript of Aesor; Translation
and excerpts from the Timeline of Temuair

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First Aeon | Grinneal 1 - 9000
"The first Grinneal"

It is believed that writing came from the Aosda civilisation.
Probably didn't preserve knowledge because of life conditions.
Mundanes probably appeared in some fashion during the next 9000 years.
They were ignorant still of the Elements.
Aosda rose around the end of the First Aeon and the beginning of the next.

Second Aeon: Madness | Grinneal 9000 - 15000
"The discovery of Kadath. Discovery of the Earth-Sea Gods ... Entreaty of the Other Gods"

Aosda civilisation, first scholars, Mundanes began questioning the world, etc.
Discovered Gods. Good and evil.
They looked north, madness spread. Darkness, eldritch, etc. Chaos spread.
The survivors looked towards other directions : they discovered the Earth-Sea Gods.
The Aosda civilization as now hurt, art depicted darker things, they looked away from the north.

200 years later, they started leeching powers from those higher entities. Studied it. Tried to tame it. Chaining lesser entities. Some built temples to gain favor.
This drew the rage of the gods.

Third Aeon: Bliss | Grinneal 15000 - 22000?
"Death of all those who knew of Kadath. Aosda civilization lost"

Several interpretations.
Now confident, looked to the north again. Found stronger powers, and unleashed them.
Some say darkness hid in their mind, waiting.
Others says that it was not hidden at all and returned wanting destruction.
Aosda civilisation ended, either because of the darkness from Kadath, or because the Earth-Sea Gods purged the land.

Fourth Aeon: Innocence | Grinneal 22000? - 26900
"Mundane work with little progress"

Mostly peace, no knowledge of what happened before and no exploration whatsoever.

Fifth Aeon: Discovery | Grinneal 26900 - 32092

Mundanes started to explore again, search again.
Their findings fell into four groups : Fire, Water, Earth and Wind. The first Elements.
They remembered the legends of the First Aosda civilisation, and decided to reenact it. It became the Second Aosda civilization.

Sixth Aeon: Purity | Danaan 1 - 1101

A new race came from the sea and arrived to the known world. They were the Tuatha de Danaan, or Children of the Goddess Danu. Many claim they were what brought light.
With their coming, "the elements danced in delight", their wisdom spread to the mundanes and merged to the preserved lore of the First Aosda.