If (big if) the name of the Zagros mountains has always sounded like this, ZAG(-RUS),*
If (big if) the symbol that generated this translation is ZAG**,
If (big if) it can be accepted that there is an alternative method of reading certain Sumerian literary texts that reveals a whole new world of information,
Then with ZAG you are in the presence of one of the shoulder knots of the great Matriarch, the knot with which she ties the stars and the planets to her woven net. The early pictographic symbol ZAG is a beautiful bow as might be used to tie back to front of a garment on the shoulder. You can even look at the much later version on ePSD (type zag into the box and hit sign) and still see remnants of the original bow. Also see the Ubaid characters’ star-studded shoulders for an idea of the importance of this concept in the ancient culture.
The ePSD gives AN (sky) combined with ZAG as ‘horizon’ which is likely correct. Strangely, those who long ago created a multitude of Sumerian gods (because certain symbols had AN, the eight-pointed star, in front of them, prefix for ‘god’ in academia) didn’t do so with this collocation. We can’t discuss Zag, the god. At least, I hope not. I haven’t looked. I personally have translated it to ‘shoulder’, to ‘knot’ and ‘tie’. I avoid being ‘fanciful’, giving too many meanings or synonyms for each symbol that might lead to straying too far from their original significance. I'm taking the time to write this post for the benefit of those who genuinely take an interest in my work and its possibilities.
Anyway, back to the point. If the above ‘ifs’ are verified, then the text could well be referring directly to the peaks of the Zagros mountains, places where the stars and planets have touched, been woven on and off its shoulders, and observed for many millennia. This is knowledge too forceful for the names to have disappeared even over such a long period of time. Places of observation for the astronomers or of some special significance in deep antiquity retain their Sumerian names to some degree or even totally. And I agree; a lot of interesting stuff in Iran.
* I found this written by a university professor whose first name is Zagros and who has, according to him, extensively researched it: “It is not a word in any known language that has a meaning other than being the name of a mountain range in Iran, Iraq, and Turkey. While there are some theories about the origin of the name, these are purely speculative.” I doubt he went to ePSD or considered a monosyllabic origin. Etymology dictionaries invariably ignore Sumerian. It has been neatly wiped off the slate of history. Too thought-provoking by far.
**but it seems to be HUR-SAG, which I believe to be the celestial top half of the millstone, in at least one version. This rules nowhere out and nothing in, not even that it refers to mountains. If it does, it would be more likely the peaks, SAG the head, a great place for an ark to land. But it might just be a millstone, a place where millstones were used. From Sumerian SAG to ZAG, from head to shoulder, is not a tremendous leap, but the underlying reason for that phonetic link will involve analysis. And it would be unlikely to prove beyond a doubt that these are the Zagros mountains.