Gandalf winter, they crossed "under" the mountains through the Mines of Moria, though only Gimli the Dwarf was enthusiastic about that route. In Moria, they discovered that the Dwarf colony established there earlier had been overrun by orcs. The Fellowship fought with the orcs and trolls of Moria and escaped them. At the Bridge of Khazad-dûm, they encountered "Durin's Bane", a fearsome Balrog from ancient times. Gandalf faced the Balrog to enable the others to escape. After a brief exchange of blows, Gandalf broke the bridge beneath the Balrog with his staff. As the Balrog fell, it wrapped its whip around
The Lord of the Rings: War in the North However, Sauron hid from Gandalf, waiting for four hundred years before returning. Around the same time, the One Ring was found by a Hobbit named Sméagol, who became utterly corrupted by it, living in the caves of the Misty Mountains, and physically transforming into a creature known as Gollum. For five hundred years, Gollum was consumed and corrupted by the Ring. Eventually, Gandalf was able to determine the evil presence in Dol Guldur was indeed Sauron. Gandalf reported back to the White Council, but Saruman dissuaded them from moving against Sauron. Only when he learned the One Ring may be