in the 5th century BCE on mounds and hills where fires were lit below the open skies. In the wake of Achaemenid expansion, shrines were constructed throughout the empire and particularly influenced the role of Mithra, Aredvi Sura Anahita, Verethragna and Tishtrya, alongside other traditional Yazata who all have hymns within the Avesta and also local deities and culture-heroes. Today, enclosed and covered fire temples tend to be the focus of community worship where fires of varying grades are maintained by the clergy assigned to the temples. Cosmology: Creation of the universe According to the Zoroastrian creation myth, Ahura Mazda existed in light and goodness above, while Angra Mainyu existed in darkness and ignorance below. They have existed independently of each other for all time, and manifest contrary substances. Ahura Mazda first manifested seven divine beings called Amesha Spentas, who support him and represent beneficent aspects of personality and creation, along with numerous Yazatas, divinities worthy of worship. Ahura Mazda then created the material and visible world itself in order to ensnare evil. Ahura Mazda created the floating, egg-shaped universe in two parts: first the spiritual (menog) and 3,000 years later, the physical (getig). Ahura Mazda then created Gayomard, the archetypical perfect man, and Gavaevodata, the primordial bovine. While Ahura Mazda created the universe and humankind, Angra Mainyu, whose very nature is to destroy, miscreated demons, evil daevas, and noxious creatures (khrafstar) such as snakes, ants, and flies. Angra Mainyu created an opposite, evil being for each good being, except for humans, which he found he could not match. Angra Mainyu invaded the universe through the base of the sky, inflicting Gayomard and the bull with suffering and death. However, the evil forces were trapped in the universe and could not retreat. The dying primordial man and bovine emitted seeds, which were protect by Mah, the Moon. From the bull's seed grew all beneficial plants and animals of the world and from the man's seed grew a plant whose leaves became the first human couple. Humans thus struggle in a two-fold universe of the material and spiritual trapped and in long combat with evil. The evils of this physical world are not products of an inherent weakness, but are the fault of Angra Mainyu's assault on creation. This assault turned the perfectly flat, peaceful, and ever day-lit world into a mountainous, violent place that is half night. Eschatology: Renovation and