Felaganna
Felaganna is a term that has appeared in various fictional contexts, most notably within the works of J.R.R. Tolkien. In Tolkien's legendarium, Felaganna is a name associated with a river. Specifically, it is an ancient Elvish name for the river Celebrant, also known as the Silverlode, which flows through the realm of Lothlórien. The name Felaganna itself is understood to derive from Elvish roots, reflecting a descriptive quality of the river.
The Celebrant is a significant waterway in Middle-earth, originating in the Misty Mountains and eventually joining