The Glanduin River is a fictional waterway from J.R.R. Tolkien's Middle-earth, primarily featured in "The Lord of the Rings" legendarium. It flows through the region of Gondor, specifically near the realm of Rohan. The river is known for its clear waters and scenic beauty, contributing to the landscape of the area. In the lore, the Glanduin River serves as a natural boundary and is significant for its role in the journeys of various characters. It is often associated with the Elves and their connection to nature, reflecting the themes of harmony and beauty found throughout Tolkien's works.