The Greater Gelion was the larger of the two sources of the River Gelion in Beleriand.
The Greater Gelion's origin was Mount Rerir and it ran southeast near Maglor's Gap until it joined the River Gelion about seventy-five miles from its source.
The Greater Gelion was a Sindarin word.
- ↑ The Silmarillion, Quenta Silmarillion, Chapter XIV: "Of Beleriand and its Realms"
- ↑ The Atlas of Middle-earth, The First Age, The Elder Days, "Beleriand and the Lands to the North"
- ↑ The Complete Guide to Middle-earth