What is Dorthonion?
1.
A region of
Its role in Tolkien's book The Silmarillion is mainly as a site of a rearguard action by a small, heroic band of 14 outlaws led by the human king Barahir and including his son, Beren. It was overrun by Morgoth's forces after Dagor Bragollach, and became a scene of guerrilla battles until eventually only the 14 remained, harassing orkish patrols in the region. After Sauron crushed the outlaws, it was renamed
Sadly, the exploits of the outlaws were never turned into fully-fledged tales.
See