Origins and Names
Across The Hobbit and The Lord of the Rings the range is known by a single English name, Misty Mountains, used uniformly by Men, Hobbits, and other peoples speaking the Common Speech. No rival English name for the range as a whole appears in the narratives. The name reads as plainly descriptive rather than commemorative: from Bilbo Baggins's own crossing onward, those who traverse the range consistently describe its heights as wrapped in cloud, fog, and sudden storm, and the peaks are rarely met under clear skies. The mist that gives the range its name is treated in these accounts as an ordinary, if thoroughly unwelcome, hazard of the passage rather than as something uncanny in itself.
Elvish tradition preserves a separate name for the same range, Hithaeglir, a Sindarin form joining an element denoting mist with a word for a line of peaks. The Silmarillion glosses this name as the Towers of Mist and applies it to the very range that fences Eriador from the vales of the Great River. The Elvish name is not a rendering of the English one but an independent and older naming, arising among the Elves quite apart from the later usage of Men and Hobbits, and it testifies that the same visual character of the mountains struck different peoples, in different ages, into comparable descriptive names.
This pairing of an untranslated Elvish name with an English one follows the general translation convention Tolkien sets out for the work as a whole, whereby names belonging to the Common Speech are rendered into English while Sindarin and other Elvish names are left in their own tongue. Hithaeglir and Misty Mountains therefore stand together in the narrative not as competing names but as the same range seen through two linguistic traditions, Elvish and mannish, that run side by side through the tales of the Third Age.
Land and Place
West of the range lies Eriador, whose settled lands give way to open moor and foothill as the ground rises; east of it the country falls again into the Vales of Anduin and, further on, into the Wilderland. Rivendell lies within the mountains themselves, set in a hidden valley on their western flank where the river Bruinen runs, and in the narratives it serves as the last dwelling of note before travelers commit to the crossing. The range does not simply stop in the south but sinks into a broad lowland gap separating it from the White Mountains, a stretch of open country long used as a way between Eriador and the lands beyond that bypasses the heights entirely.
Beneath the range's central stretch, in the mountains above the ruined land of Hollin, lie the halls of Moria, whose two doors open on opposite flanks of the range: a western gate facing down toward Hollin, and an eastern gate opening high above Nanduhirion, the Dimrill Dale, within sight of the dark water of Mirrormere and looking out toward the woods of Lothlórien across the Silverlode. Towering over this same stretch is Caradhras, the Redhorn, among the highest and most dangerous points along the whole crossing, its slopes prone to sudden snow and ill weather even when passes elsewhere remain open.
Ways over the range are few rather than many. In the north the High Pass climbs from near Rivendell and descends on the eastern side through cave-ridden heights toward the Vales of Anduin. Nearer the centre, the Redhorn Gate crosses past the shoulder of Caradhras toward Moria's western door, a route steep and exposed enough that a party may be turned back by weather alone. Travelers unwilling or unable to risk either are left with the lowland gap in the south as their only way around the mountains rather than over them.
History
The range's origin is set far earlier than any tale of Elves or Men. According to the Elder Days tradition preserved in the Silmarillion, Melkor raised the Misty Mountains to hinder the riding of the Vala Oromë, who alone among the Valar continued to visit Middle-earth and range across its wild lands while the other Powers withdrew to Aman. The mountains are thus remembered not as a natural formation but as an act of obstruction, thrown up out of malice during the long shaping of Middle-earth before the coming of the Elves.
In the same distant age the Dwarf Durin, eldest of the Seven Fathers of his people, is remembered as having found and founded the deep city later called Khazad-dûm beneath the mountains, in the stretch of the range above Hollin later associated with Moria's western door. Under Durin's line the city grew across the ages that followed into the greatest of the Dwarf-holds, its wealth resting above all on the mithril found nowhere else in Middle-earth, and Durin's descendants continued to rule there long after his own name had passed into legend among his people.
The mountains' long peace was broken from two directions in the Third Age. Orcs multiplied in the northern reaches of the range and about Mount Gundabad, a stronghold they and the Dwarves both claimed by ancient right, and warfare between the two peoples flared repeatedly over the centuries. It culminated in the year 2799 of the Third Age at the Battle of Azanulbizar before Moria's eastern gate, where the Dwarves under Dáin Ironfoot broke the Orc host and slew the Orc chieftain Azog, avenging the earlier death of the Dwarf-king Thrór, though the Dwarves did not thereafter reoccupy Moria itself.
A greater ruin had already overtaken Khazad-dûm from within. In the year 1980 of the Third Age the Dwarves of Moria, delving too greedily and too deep in search of mithril, roused a Balrog of the ancient world that had lain hidden beneath the mountains since the fall of Thangorodrim in the First Age. The creature slew King Durin VI that same year and his son Náin I the year following, and the surviving Dwarves abandoned the city entirely, leaving it to the Balrog and to the Orcs who filled the empty halls after them. The mountain-realm the name Khazad-dûm had once denoted became, from that time on, the Orc-haunted ruin known to later travelers as Moria.
Over the centuries that followed, Orc power spread more widely through the range under captains such as the Great Goblin who held the caves along the High Pass and, later, Bolg of the north. It was through these infested heights that Bilbo Baggins and his company passed in the year 2941 of the Third Age, an ordeal that ended in their capture beneath the mountains and, at the year's close, in the Battle of Five Armies at the Lonely Mountain, where Bolg's Orc host was broken and the immediate goblin threat to the northern passes was severely reduced.
The mountains' last recorded ordeal in the Third Age came during the War of the Ring, in January of the year 3019, when the Fellowship of the Ring first attempted the Redhorn Gate and was driven back by snow and storm on the shoulder of Caradhras, and turned instead to the way beneath the mountains through Moria. There, on the twenty-fifth of that month, Gandalf fell in battle with the same Balrog roused generations before, dragging it down into the deep places of the mountains and destroying it only after days of struggle far below the peaks, before returning transformed as Gandalf the White. With Sauron's overthrow later that year the immediate perils of the crossing eased, though the narratives offer no account of Moria being resettled.
People and Rule
No single people ever held lordship over the Misty Mountains as a whole; the range is better described as a shared and largely unclaimed wilderness in which several peoples keep to their own ground. Beyond the Orc-holds already noted and the Dwarves who once ruled beneath Hollin, the high passes shelter beings answerable to no realm at all. Travelers crossing by the northern routes in stormy weather have met with Stone-giants hurling rock in the high places, creatures that belong to no settlement and owe no allegiance to Orc, Dwarf, or Man, and whose presence marks the crossing as a stretch of country outside any ordered rule.
Among the peaks nearer the Wilderland the Great Eagles keep their own high domain, led in the tales of the Third Age by Gwaihir, called the Windlord, who holds authority over his kindred much as a chieftain over his people rather than as a sovereign over territory. The Eagles favor no side among the mountains' other inhabitants and rarely intervene in the affairs of Orcs, Dwarves, or Men, yet twice in the recorded tales their aid proves decisive: they bear away Thorin Oakenshield's company from the trees above a ring of fire during the Battle of Five Armies' opening peril, and generations later Gwaihir carries Gandalf from the summit of Zirakzigil after his fall with the Balrog, bearing him down out of the mountains to Lothlórien for healing.
Set against this scattered occupation, the mountains' only settled outpost of a ruling people lies at their western edge rather than within their heart: Rivendell, under Elrond, watches the approaches to the range without claiming the peaks themselves, and offers counsel and shelter to travelers rather than exercising any authority east of the crossing. The range therefore functions in the narratives chiefly as a frontier rather than a domain — a country divided among Orc-holds, a fallen Dwarf-city, wandering Eagles, and older, nameless things, bounded on the west by the ordered lands of Eriador and on the east by the looser reach of the Wilderland, but ruled by none of them.
Role in the Story
In The Hobbit the crossing of the range marks the story's decisive turn: a journey through comparatively ordered country gives way, once the company is taken by goblins beneath the peaks, to a tale of separation, darkness, and improvisation. It is in this underground setting, cut off from his companions, that Bilbo Baggins happens upon a ring in the dark and matches wits with its former owner in a contest of riddles played for his life. The narrative treats the encounter at the time as a stroke of luck in an otherwise grim passage, yet it is on this chance meeting beneath the mountains that the later history of the Ring turns.
In The Lord of the Rings the range instead poses a deliberate choice rather than an ambush. Before the Fellowship of the Ring, the mountains stand as an obstacle whose manner of crossing must be argued out and agreed upon, and the debate over open pass, hidden road beneath, or a wide way around exposes the differing temperaments of the company: Boromir's preference for the harder but open road, Aragorn's foreboding about the way beneath the mountains, and Gandalf's own reluctance to lead the company where he does not wish to go. The mountains thus function less as scenery than as a pressure that forces the company's hand and reveals, before any blade is drawn, how each of its members weighs known hardship against unknown dread.
For the Hobbits in particular the range stands throughout both tales as the practical edge of the known world. Hobbit narrators recall the crossing not as one stage among many but as the point past which the comforts of settled country are left behind and a harder, stranger land begins, a memory that colors how the mountains are spoken of long after the journeys themselves are over. The range's narrative weight therefore lies less in any single event than in this recurring function as threshold — the place where a comparatively safe world ends and the story's real hazards begin.