Woodland Realm - The Wood Elves east of the Misty Mountains built for themselves a great kingdom in Mirkwood Forest.

"Thranduil established his realm in the north-east of the forest and delved there a fortress and great halls underground.  Oropher was of Sindarin origin, and no doubt Thranduil his son was following the example of King Thingol long before, in Doriath; though his halls were not to be compared wirh Menegroth.  He had not the arts nor the wealth nor the aid of the Dwarves..." ~Unfinished Tales (The History of Galadriel and Celeborn)