Lindon (Middle-earth)
Lindon is the land beyond the Ered Luin, the Blue Mountains, in the northwest of Middle-earth in the fictional universe of J. R. R. Tolkien. It is the westernmost land of the continent. The Gulf of Lune divides it into Forlindon (North Lindon) and Harlindon (South Lindon). Mithlond or the Grey Havens stood near the mouth of the River Lhûn at the gulf's eastern end.
Lindon serves as a narrative plot device, the final point of transition from the mortal changing world of Middle-earth to the unchanged Arda of the past.
Read more about Lindon (Middle-earth): First Age, Second Age, Third Age and The Passing of The Elves