A mountain range near Cuiviénen where the elves awoke, described as the “Mountains of the East” (S/49) and translated “Red Mountains” (MR/77). This name is a compound of the prefix oro- “mountain” and the plural of carnë “red” (SA/orod, caran).
Conceptual Development: As pointed out by Christopher Tolkien, the Orocarni as described in The Silmarillion correspond to a mountain range appearing on the earlier Ambarkanta maps, with the label the “Red Mountains” (SM/256, MR/77 notes §41).
Orocarni noun "the Red Mountains", place-name: literally rather *"Mountain-Reds": a plural form of carnë "red" with the element oro- "mountain" or "high" prefixed (Silm)