Zoroastrians about creation of the world

One of the most interesting conceptions on the creation of the world is the conception of Zoroastrians. According to such conception the world exists for 12 thousands years already. And this story can be divided into four periods and each period has 3 thousand years.
The first period is the pro-existence of things and ideas. This stage of the sky creation already contained the images of everything that would exist on the earth. Such state of the world was spiritual.
The second period was considered to be creation of material world that became real, seen and inhabited by live creatures. The sun, the moon, the sky and prehistoric people were created. At the same time everything that is beyond the world was created such as stars, planets, comets, etc. The god who created everything polluted the water and sent the death to the first person. But a man and a woman are born from the first man. They were ancestors of humanity. And after the collision of two categories that are constantly fighting made everything move: water starts to run, land starts to move making mountains, and planets also start to move.
And the third period is the period of mythological Heroes activity. It is interesting to know that this period also has the mentioning about the general flood. But according to this myth people are saved from the water by the god that covered them in special place.
And the fourth period is the last one and refers to future when the destiny of the world will be decided in the combat between the good and the evil gods.