Hara Berezaiti

Hara Berezaiti (Avestan: 𐬵𐬀𐬭𐬁⸱𐬠𐬆𐬭𐬆𐬰𐬀𐬌𐬙𐬍, harā.bərəzaitī) is the term used in the Avesta, whereas Sassanian era texts, like the Bundahishn use Harborz (Middle Persian: hlbwlc).

[1] The first term (Avestan: 𐬀𐬌𐬙𐬍, harā; Middle Persian: hl) is assumed to be derived from Proto-Indo-European (PIE) *ser- with the meaning of to keep watch or to guard (compare e.g. English conserve or observe).

57.19 the personification of Haoma is mentioned offering to the Zoroastrian divinity Sraosha on Mount Hara.

10.12-14 describe how Mithra reaches Mount Hara and survey the lands of the Iranians, where "navigable rivers rush with wide a swell towards Parutian Ishkata, Haraivian Margu, Sogdian Gava, and Chorasmia."

10.50-51 state how his abode above Mount Hara was built by Ahura Mazda and the Amesha Spentas and verses Yt.

Out of this flat earth, Mount Hara would grow for 800 years until finally reaching to highest point in heaven.

It is the source of all waters and from its peak Aredvi Sura Anahita would flow into the world ocean vourukasha.

Its peak was supposed to be a place of primordial purity, unaffected by the works of Angra Mainyu like darkness, diseases or pollution.

[11][12] One example is the Alborz mountain range, which contains Iran's highest peak, Mount Damavand.