Lost Elf-maiden of Lothlorien. Nimrodel was graceful and beautiful, with long hair that shone like golden mallorn leaves in sunlight. She was a Silvan Elf, or Wood-elf. Nimrodel spoke only the language of the Wood-elves even after Sindarin became the common tongue of Lothlorien. Nimrodel loved Amroth, the King of Lothlorien, but she refused to marry him. Amroth was a Sindarin Elf, and Nimrodel was unhappy that many Sindarin and Noldorin Elves had come to Lothlorien because she believed that they exposed her peaceful woods to the war and unrest of Middle-earth. She preferred to live apart from them and maintain the ways of the Wood-elves. Nimrodel lived alone near the river that later bore her name. Her home was near the northwestern border of Lothlorien. She may have dwelled in a grotto - or small cave - by a waterfall, but when Orcs from the nearby Misty Mountains began encroaching on the forest she may have started living high in the branches of a tree. This may have inspired the creation of flets - platforms used as dwelling places in the trees by the Elves of Lothlorien. In 1980, a Balrog awoke under the Misty Mountains, and the next year the Dwarves abandoned their realm of Khazad-dum which became a place of evil called Moria. Nimrodel was distraught and she fled alone from Lothlorien. She reached the eaves of Fangorn Forest but she found the trees there frightening and some of them - which may have been Huorns - moved to prevent her from entering the forest. Amroth followed Nimrodel and found her near Fangorn. She promised to marry him if he could bring her to a land of peace. Amroth agreed to leave Lothlorien and go with Nimrodel to the Undying Lands. They set out for the Elf-haven of Edhellond on the Bay of Belfalas in the south. They were accompanied by other Silvan Elves from Lothlorien. One of Nimrodel's companions was an Elf-maiden named Mithrellas, who later wed the forefather of the Princes of Dol Amroth. When they reached the White Mountains, Nimrodel and Amroth became separated. Nimrodel wandered for a while in the mountains until she came to the River Gilrain, which reminded her of the stream she had lived near in Lothlorien. She sat by a pool, listening to the water and looking at the stars reflected in it, and her heart was lightened. Nimrodel fell into a long, deep sleep. When she awoke, she came down from the mountains into Belfalas. What became of her is unknown. It was said that in springtime her voice could be heard singing in the falls of the River Nimrodel in Lothlorien, while the voice of Amroth came up the Anduin on the south wind. 
Nimrodel means "Lady of the White Grotto," probably in reference to her dwelling place near the waterfall. The name is of Silvan origin adapted to Sindarin. The element nim means "white" and rod means "cave, grotto."