Flood of Bruinen

The Flood of Bruinen was a sudden rising of the Bruinen River that washed away the Black Riders that were pursuing Frodo^[1] on 20 October T.A. 3018.^[2] The flood was commanded by Elrond, and Gandalf caused some of the waves to take the form of white horses with white riders upon them.^[3]

References

1. ↑ J.R.R. Tolkien, The Lord of the Rings, The Fellowship of the Ring, "Flight to the Ford"
2. ↑ J.R.R. Tolkien, The Lord of the Rings, Appendix B, "The Great Years"
3. ↑ J.R.R. Tolkien, The Lord of the Rings, The Fellowship of the Ring, "Many Meetings"