Glanduin is a river that marks the boundary between the former kingdom of Arnor and the lands of Minhiriath.
This map was made by Bashkuga (AKA Fredius).
It is a 2 player map with a river running through the middle, there is a bridge that is vital in this map. An interesting feature of this map is the cave on the North-West side a cave that can be travelled through.
The scenery is stunning and for me personally is my favourite of Bashkuga's maps to date it's worth exploring this map.