Greylin
From Tolkien Gateway
Greylin was a river of the far north of Middle-earth. The Greylin rose in the western Grey Mountains and flowed southwestward to meet the Langwell and form the source of the Great River, Anduin.
Greylin was a river of the far north of Middle-earth. The Greylin rose in the western Grey Mountains and flowed southwestward to meet the Langwell and form the source of the Great River, Anduin.