Nan-tathren
From Tolkien Gateway
In the region where the River Narog met the great River Sirion, a little to the north of the Sirion's Mouths, lay the land of Nan-tathren. Famed for its willows and its flowered meadows, those who had visited this land reported its extraordinary beauty. It played little part in history, except that the Exiles of Gondolin rested here for a while on their long journey south from their city's ruin.