[Findegil]

I have looked into the composition of Sil77 and found some parts worth at least considering:

BR-EX-13.5: We discussed this in another thread. Since I want to keep at least the possibility of Galadriel crossing Ered Lindon before the end of the First Age, we have either to skip this passage or alter it:

… But the land between the mouths of Sirion and {Gelion}[Duin Daer] was little visited by the {Gnomes}[Noldor], BR-EX-13 <LQ2 Taur-im-Duinath, [Footnote to the text: Forest Between the Rivers.]> a tangled forest in which no folk went save here and there a few Dark-elves wandering; and beyond {Gelion}[Duin Daer] the {Gnomes}[Noldor] seldom came, nor BR-EX-13.5 <editorial addition based on LotR came many of them >ever east of {Eredlindon}[Ered Lindon] while BR-EX-14 {that land}<LQ2 their realm> lasted.

BR-EX-23.5: Well from Maeglin and the later map of Beleriand we know that Duin Daer had a Fall above the confluence of Ascar. So we have to change §119:

… And in the East the wall became ever less sheer, for the vale of {Gelion}[Duin Daer] sloped ever southward steadily, and {Gelion}[Duin Daer] had BR-EX-23.5{neither}[only one] fall {nor}[and no] rapids throughout his course, but was ever swifter than was Sirion. …

BR-EX-28.5:

§116 In this way the chieftains of the {Gnomes}[Noldor] held their lands and the leaguer upon Morgoth after his defeat in the Second Battle. Fingolfin and Fingon his son held Hithlum, and their chief fortress was at Eithel Sirion in the east of {Eredwethion}[Ered Wethrin], whence they kept watch upon {Bladorion}[Ard-galen]; and their cavalry rode upon that plain even to the shadow of Thangorodrim, and their horses multiplied for the grass was good. Of those horses many of the sires came from Valinor BR-EX-28.5{.}<GA §83 , and were given to Fingolfin by {Maidros}[Maedros] in atonement of his losses, for they had been carried by ship to Losgar.> But Turgon the wise, second son of Fingolfin, …

BR-EX-30.5:

§117 The sons of [Finrod}[Finarfin] held the northern march from the pass of Sirion between Hithlum and Dorthonion unto the eastern end of Dorthonion, where is the deep gorge of Aglon. And {Inglor}[Finrod] held the pass of Sirion, and built a great watchtower, {Minnastirith}[Minas Tirith], upon an isle in the midst of the river; but after the founding of Nargothrond this fortress he committed mostly to the keeping of his BR-04 brother[‘s son] Orodreth. BR-EX-30 {But Angrod and Egnor watched Bladorion}<LQ2 [His younger brethren Angrod and {Egnor}[Aegnor] watched the fields of {Bladorion}[Ard-galen]> from the northern slopes of Dorthonion BR-EX-30.5 <Sil77 based on GA §85 , and were the vassals of their brother Finrod, lord of Nargothrond>; and their folk was not great for the land was barren, and the great highlands behind were deemed to be a bulwark that Morgoth would not lightly seek to cross.

BR-EX-33.5: The River Nenning is not included so fare in our description and here we have a nice chance.
BR-EX-34: I think there was a mistake here in the editing. It should be:

… BR-EX-33 {But Inglor was King of Nargothrond and overlord of the Dark-elves of the western havens; and with his aid}<LQ2 But Finrod was king of Nargothrond and over-lord of all the Dark-elves of Beleriand between Sirion and the Sea, save only in the Falas BR-EX-33.5 <Sil77 based on GA§85 , west of {Narog to }the River Nenning, that reached the sea at Eglarest>. There dwelt still those of the Sindar who still loved ships and the Sea, and they had great havens at Brithombar and Eglarest. Their lord was Círdan the Shipbuilder. There was friendship and alliance between Finrod and Círdan, and with the aid of the Noldor> BR-EX-34 {Brithombar and Eglorest were rebuilt and became fair towns}<GA 65 §90 {Here with the aid of the Noldor} (whose skill far surpassed that of the Sindar) Brithombar and Eglarest were walled about with great walls, and fair towns were raised within, and harbors with quays and piers of stone> , recalling somewhat the havens of the Elves upon the shores of Valinor.

BR-EX-32.5: A snipet from GA:

§119 Thus the sons of Fëanor under the leadership of {Maidros}[Maedros] were lords of East Beleriand, but their folk was in that time mostly in the north of the land; and southward they rode only to hunt, and to seek solitude for a while BR-EX-32.5{.} <GA §86 , and there {Damrod and Diriel}[Amros] abode and came seldom northward while the Siege lasted.>And thither for like purpose the other Elflords would sometimes come, …

Respectfully
Findegil