The East Beleriand was the east region of the Beleriand between the western part and the Blue Mountains during the First Age of Middle-earth. The wide and open regions of Lothlann, Maglor's Gap, Thargelion, and the Ossiriand made up the majority of the East Beleriand. They were lands consisting mostly of hills and lowlands with dense forests, scattered woodlands, scrubs, stunted trees, and thickets. Climates varied from severely cold and dry winters with short and cold summers, to mild winters with mild summers. All of which were under the influence of the cold and dry winds from Dor Daidelos and the Iron Mountains to the north, and the warm and moist winds coming from the sea.