The region Elrohir Mithrandír is the north central region of the continent Arboreal. If one were to dig straight down through the world, beginning at Elamir, of the Lands of Purity, they would emerge in the deep woodlands of Elrohir Mithrandír. Little is know of this region by those on the Lands of Purity side. This is because only elves are allowed to use the Oaken Gate.
During the Black Tide War (1465 - 1504), elven soldiers and mercenaries from Elrohir Mithrandír used the Oaken Gate to aid Galadriël in the war against the dark hordes of Thasmudyan. This remained a secret for long after the war, not even the highest leaders of the Holy Quinary were aware of these secret allies.
Rumors abound among the non-elves on the size of these kingdoms. Sages speculate that the lands of Elrohir Mithrandír hold an array of empires, with elves holding the greatest populations, and the lands themselves covered with wild and magical forests.
Elrohir Mithrandír is at a high elevation, with its lowlands averaging a mile and a half above sea level, as such the cities of this region are called the Cloudsraper Cities.