In J.R.R. Tolkien’s The Lord of the Rings, the Fellowship crosses the River Anduin at the Falls of Rauros. The Anduin is the Great River of Middle-earth and one of the major geographic features of the story.
The river flows southward from the northern regions of Middle-earth toward the Bay of Belfalas. Its course passes through or near many important locations, including Lothlórien, the Emyn Muil, and the borders of Gondor. The Fellowship travels down the river in boats after leaving Lothlórien.
At Rauros, the river plunges over a great waterfall between the hills of Amon Hen and Amon Lhaw. The Fellowship’s journey ends there as Boromir dies defending Merry and Pippin, while Frodo decides to continue toward Mordor alone. Sam follows him across the riverbank and reaches the departing boat.
The Anduin is sometimes confused with the Bruinen, the river near Rivendell, or the Baranduin, known by Hobbits as the Brandywine. Those rivers occupy different regions of Middle-earth.