The Eastern Mountains are a limestone mountain range spanning through the whole eastern area of Darrensmithe, acting as its natural border. They have three unnamed peaks and are subject to gold, silver, and copper mining.
For some reason, when Royal dragons desire to show dissatisfaction with their treatment, they tend to make themselves a den on the Eastern Mountains and plot rebellions. It could be that the proximity of the breeding grounds also serves as the enticement for their choice of this location.