(Also Orokarni in HoME)

Far to the east of Middle-earth were the Orocarni, the Red Mountains, or the Mountains of the East.

In the Ages of Starlight they stood on the eastern shore of the Inland Sea of Helcar where, in the bay of Cuiviénen, the Elves were first awakened. The Orocarni were of a reddish hue, and were filled with the music of a multitude of rivers and springs that flowed down into the crystal waters of the Sea of Helcar.
Encyclopedia entry originally written by Gil_Estel101