Four of the seven Fathers of the Dwarves awoke in the range. The northern end of the Orocarni was home to the Ironfists and Stiffbeards, and in the southern end of the range awoke the Blacklocks and the Stonefoots.
The Dwarves of this region probably still ruled and controled themountain range with many great Dwarven cities we will never know about. After the end of the First Age the Orocarni remained, and it formed the eastern end of the land of Rhûn.
One of the rivers that arose in the Orocarni flowed into the inland Sea of Rhûn.
Because the Orocarni were far to the east, they were not visited by the Eldar, and the Edain did not reach them until the Fourth Age[source?], the Orocarni do not appear in any of the tales of the Red Book of Westmarch.