This is an interesting video whereby people found ancient caves with ancient cities, artifacts and libraries leading to a belief in the existence of another people.
So many things we don't know about our own planet while searching the heavens for answers with respect to who we are , where we came from, how we ended up here?
Goes back to Zoroasterinism , in a religion known as Magianism.
Zoroaster was a prophet otherwise known as Zarathustra, from before the 6th century BCE, from an area
in the eastern part of ancient Greater Iran. This religion believed in an all , uncreated, good creator, Ahura Mazda, who did not promote evil.
A mortal is supposed to participate in the fight between good and evil. The 4th day after death, the soul reunites with the guardian spirit, where its' experiences of life is collected to continue the battle in the spiritual world.
This is an interesting video about civilizations we know nothing about.
Hope you enjoy it as much as I did