Ruins of Dol Guldur

Since the coming of Sauron to Dol Guldur, the surrounding Greenwood had become a place of fear and darkness. Corrupted by the influence of the Necromancer, it had become known by the new name of Mirkwood. Yet the shadow that had grown over the forest had not gone unnoticed by the wise. To keep his return to Middle-earth secret, Sauron fled to the East, and his influence over the forest faded in the ensuing years, and Dol Guldur fell into ruin.