'That is true,' said Legolas. 'But the Elves of this land were of a race strange to us of the silvan folk, and the trees and the grass do not now remember them. Only I hear the stones lament them: deep they delved us, fair they wrought us, high they builded us; but they are gone. They are gone. They sought the Havens long ago.'
Possibly. I don't remember that scene. The Fellowship was in the area in the book, but they skipped it in the movie.
Very likely! Ost-in-Edil is even labeled on Christopher Tolkien's 1980 map:
Thank you so
'That is true,' said Legolas. 'But the Elves of this land were of a race strange to us of the silvan folk, and the trees and the grass do not now remember them. Only I hear the stones lament them: deep they delved us, fair they wrought us, high they builded us; but they are gone. They are gone. They sought the Havens long ago.'
Only most of their people didn't. They were destroyed by Sauron and his forces... ;)
And most of those that remain dwell a bit north in Imadris with Elrond.