This Issue is damn tricky...
"(...)Before its western gate there was a green mound,
Ezellohar, that is named also Corollairë(...)"
"(...)
Máhanaxar, the Ring of Doom near to the golden gates of Valmar(...)"
so what does "before" and "near" mean here... I remember som e tourist advertising say that Giant#s causeway was "just outside Belfast"... its de facto 60 miles north of it! So whatever before or near does mean, I'd say it's definitely closer than 60 miles. What would you call "near or before" Is the Statue of Liberty "near or before" the NY mainland? it's about 1,5 miles I guess, so anything between 60 miles and 1,5 miles would be thinkable.
Also, how large is Valimar? I assume Tirion, Alqualonde and Formenos aren't that big, more like medieval Cities perhaps, or at least not larger than ancient rome... but Valmar is often describes as "great". Is it similar to one of the modern megacities , i mean is it as big as LA or maybe the densely settlet sorroundings of the London Area? That could be quite a large area...
What is said about the Light in Valinor?
The northern Lands, Araman and southern Arvalin are described as Dark... so theere#s not everywhere light in Aman. In connection to Lórien theres sometimes the term twilight used. So I guess Lórien is some distance away from the trees and is only in dim or half-light.
"(...)[If] [the Teleri] wished they could see the light of the Trees, and could tread the golden streets of Valmar and the crystal stairs of Tirion(...)"
Does this mean the Teleri cound't normally see the light from their abodes?
"(...)It is told that even as Fëanor and Fingolfin stood before Manwë there came the mingling of the lights, when both Trees were shining, and the silent city of Valmar was filled with a radiance of silver and gold.(...)"
So seemingly the light in Valmar (directly beside or beyond the trees) is stronger and of a different quality than in the rest of Valinor.
"(...)But Melkor looked north, and saw afar the shining plain, and the silver domes of Valmar gleaming in the mingling of the lights of Telperion and Laurelin.(...)"
So here clearly the south is dark, only the plain of Valinor is described as shining.So Valimar lay in a great plain, while the Trees were on a height.
"(...)in the midst of the plain beyond the mountains they built their city(...)"
another hint, Valimar lay central in a plain behind the Pelori...
"(...)to that low place amid the hills where Valinor may just be glimpsed upon the far off plain; and that opening is nigh Taniquetil where is the strand of Eldamar.(...)"
So Valinor is quite far off from Calacirya/Taniquetil and Eldamar as it can only be glimpsed on from afar...
"(...)Behold there is a low place in that ring of mountains that guards Valinor, and there the shining of the Trees steals through from the plain beyond and gilds the dark waters of the bay..., but a great beach of finest sand, golden in the blaze of Laurelin, white in the light of Silpion, 1 runs inland there, where in the trouble of the ancient seas a shadowy arm of water had groped in toward Valinor, but now there is only a slender water fringed with white. At the head of this long creek there stands a lonely hill which gazes at the loftier mountains.(...)"
hmm... so theres a far wide creek and beach more inland where Tuna is located and this area is still bathed in the shine of the trees...
"(...)Even among the radiant flowers of the Tree-lit gardens of Valinor [the Vanyar and the Noldor] longed still at times to see the stars; and therefore a gap was made in the great walls of the Pelóri, and there in a deep valley that ran down to the sea the Eldar raised a high green hill: Túna it was called. From the west the light of the Trees fell upon it, and its shadow lay ever eastward.... Then through Calacirya, the Pass of Light, the radiance of the Blessed Realm streamed forth, kindling the dark waves to silver and gold, and it touched the Lonely Isle, and its western shore grew green and fair.(...)"
here the light from the trees even reaches the western coasts of Tol Eressea...
"(...)... [Alqualondë] lay upon the confines of Eldamar, north of the Calacirya, where the light of the stars was bright and clear.(...)"
This of course could explain while the Teleri usually did not see the light of the trees... their city did not lay east of calacirya but more to the north, so they were not exposed to the light.
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Enough quotes, Question now is how do we rationalize the description and distances...
some ideas:
-the Himalaya mts are visible from Kathmandu 82.5 miles or 132 KM away, actually the area is known for it#s very beautiful view on the mountains (besides: Ama Dablam would make a terrific Taniquetil!
http://www.himalayanwonders.com/blog/the-14-most-beautiful-peaks-of-the-himalayas.html#)
-the Chicago Skyline is visible from Milwaukee 90 miles away :
"(...)one would need to be 5,500 feet high in milwaukee to see the base of a skyscraper in chicago, but with the sears tower standing nearly 1,500' tall and several others over 1,000', you would not have to be at 5,500' high in milwaukee to see the tops of those buildings. this of course is all presuming optimal visibility conditions. (...)"
(
http://www.skyscrapercity.com/showthread.php?t=1089877&page=2)
-New Mexico Atomic Bomb Tests could be seen for 200 miles (
http://www.newyorker.com/tech/elements/the-first-light-of-the-trinity-atomic-test) this has to do with hight as well... we don#t know exactly how high the two trees were but maybe we could try to guess it with what we know about the visibility of light and curvature of the earth (of course I know... in theory Aman would be a flat world...).
so far i propose:
-the two trees should be more than 60 km high (i know this is not possible...)
-Mahanaxar and Ezellohar are 1,6-60 miles outsode of Valmar
-Valmar is only 1000 miles inland
-Alqualonde is a bit mor north from the Calacirya, possibly more than 90 miles
-the Calacirya if gigantic! Given that Tol Eressea is roughly the size of Britain it should be 400-800 miles wide , so its not so much of a simple pass but more a mountainless lower landscape.
What we haven't thought through yet are the influence of the second world on this:
-Elves see different than we do. They can see much farther and need far less light
-The light of Aman has different physical qualities than the light we know... the Airs from Valinor would probably transport the light in a way like "bubbles", not so much like waves or beams
I probably made many mistakes in this and there are probably many things i did not consider of while thinking this through... any of you thoughts about this?