Rerir
Rerir is a fictional mountain mentioned in J.R.R. Tolkien's legendarium, specifically in The Silmarillion. It is one of the great mountain ranges of the Blue Mountains, located in the northwest of Middle-earth. These mountains served as a formidable barrier and a refuge for various peoples during the early Ages of Middle-earth. Rerir itself is described as a particularly tall and significant peak within this range. Its exact location and prominence within the Blue Mountains are not detailed extensively, but its mention signifies its importance in the geography of the ancient world created by Tolkien. The Blue Mountains, or Ered Luin as they are known in Quenya, were a place of ancient Elven settlements and later became a refuge for Dwarves who had been driven from their homes. Rerir's presence within this range places it in a region of historical and mythical significance, associated with the early history of Elves and Dwarves and their struggles against the forces of darkness. The name Rerir itself is Sindarin in origin, though its precise etymology is not explicitly stated in Tolkien's writings. Its inclusion contributes to the rich tapestry of Middle-earth's geography, adding depth to the world's ancient past.