Hell and Middle-earth
Scholars have seen multiple resemblances between the medieval Christian conception of hell and evil places in J. R. R. Tolkien's fictional world of Middle-earth. These include the industrial hells of Saruman's Isengard with its underground furnaces and labouring Orcs; the dark tunnels of Moria; Sauron's evil land of Mordor; and Morgoth's subterranean fortress of Angband. The gates to some of these realms, like the guarded West Door of Moria, and the Black Gate to Mordor, too, carry echoes of the gates of hell.
Some of the journeys down into the dark places of Middle-earth, too, have been likened to the katabasis of Ancient Greece, a descent into the underworld, as when Lúthien and Beren descend into Angband, or when Lúthien goes to the Halls of Mandos to plead with him to allow Beren to return to life, paralleling the classical Greek legend of Orpheus and Eurydice. These journeys into hellish places may also recall the medieval theme of the Harrowing of Hell, a story in which Christ descends into hell after his crucifixion, and sets the Devil's captives free with the power of his divine light. The Devil is paralleled by both of Middle-earth's dark lords, Morgoth and Sauron; Sauron is in turn supported by a range of demonic figures, including the Nazgûl who appear like the Devil as black riders on black horses, the fiery-eyed Balrogs, and the Orcs with their devilish habits and appearance.
Context
In medieval Christian cosmology, middle-earth was the realm of men. It was at the centre of three worlds, with heaven above, hell below. J. R. R. Tolkien was a devout Roman Catholic. He described The Lord of the Rings as rich in Christian symbolism. Many theological themes underlie the narrative, including the battle of good versus evil, the triumph of humility over pride, and the activity of grace. The Bible and traditional Christian narrative also influenced The Silmarillion; in particular, the fall of man influenced the Ainulindalë, the fighting amongst the Elves, and the fall of Númenor.Hellish places
Several places in Tolkien's Middle-earth have been described as being or resembling various kinds of hell. In The Silmarillion, the dark lord Morgoth's underground fastness of Angband in the First Age is an instance. In The Lord of the Rings, the land of Morgoth's successor Sauron, the realm of Mordor with its volcano, Mount Doom, and Sauron's Dark Tower of Barad-Dûr, is another. The dark and dangerous tunnels of Moria form another, as does the enclosed circle of Isengard, centred on the tower of Orthanc, with its underground fires and furnaces, home to Orcs under the control of the traitorous Wizard Saruman.Industrial hells
The scholar of English literature Charles A. Huttar describes Isengard as an "industrial hell". He quotes Tolkien's description of Isengard, supplying his own emphasis on Tolkien's words: "tunneled.. circle.. dark.. deep.. graveyard of unquiet dead.. the ground trembled.. treasuries.. furnaces.. iron wheels.. endlessly.. lit from beneath.. venomous." Huttar comments: "The imagery is familiar, its connotations plain. This is yet another hell ." All the same, he writes, the tower of Orthanc cannot but be admired, with its "marvellous shape" and wonderful, ancient strength; he supposes that for Tolkien, technology could neither be "wholeheartedly embraced nor utterly rejected".Shippey, discussing Saruman's character, notes several facts about him: Treebeard's comment that "He has a mind of metal and wheels"; that Isengard means "Irontown" in Old English; that the Ents, tree-giants, are attacked in Isengard with "a kind of napalm perhaps... Tolkien's own experience, a Flammenwerfer". Shippey concludes that Saruman had been led into "wanton pollution... by something corrupting in the love of machines", which he connects to "Tolkien's own childhood image of industrial ugliness... Sarehole Mill, with its literally bone-grinding owner".
David D. Oberhelman, writing in the J.R.R. Tolkien Encyclopedia, states, following Anne C. Petty, that there are multiple "industrial 'hells' in Tolkien's work, such as Saruman's blighted, machine-ridden Isengard". He notes that its prototype was the fallen Vala Morgoth's subterranean fortress, Angband, whose name meant "Iron Prison" or "Hell of Iron".
Gates of hell
Charles A. Huttar compares the travellers' approach to the dark tunnels of Moria under the Misty Mountains to Odysseus's passage between the devouring Scylla and the whirlpool Charybdis. Huttar likens the "clashing gate" that crashes shut behind the travellers as they enter Moria to the Wandering Rocks that in Greek mythology lie near the opening of the Greek underworld. That realm, also called Hades, the name of its ruler, is where the Greeks thought people went after death, never to return. The gigantic tentacled Watcher in the Water, a monster who guards the gate to the underground realm, parallels the mythical Scylla who attacked Greek mariners.The gate to Mordor at the Morannon is named the "Black Gate". Tom Shippey writes that the Catholic Tolkien comes very close to allegory and writing about Christian revelation in moments of what Tolkien called "eucatastrophe". When the One Ring is destroyed and Sauron is overthrown for ever, a great eagle comes as messenger to report the glad news. The eagle sings a song that, Shippey notes, sounds very much like Psalms 24 and 33 in the Bible, complete with Authorised Version words like "ye" and "hath". When the eagle sings "and the Black Gate is broken", Shippey writes, the surface meaning is the Gate of the Morannon, but it could "very easily apply to Death and Hell", as in Matthew 16:18. In his view, this degree of double meaning was "deliberate", as the date was 25 March, for the Anglo-Saxons the date of Christ's Crucifixion, and the Annunciation, and the last day of Creation.
The other entrance to Mordor, the dangerous pass of Cirith Ungol, is guarded by the giant spider Shelob. Jane Chance likens Shelob to the guardian of the gateway to Hell in John Milton's Paradise Lost. George H. Thomson similarly compares Shelob to Milton's Sin and Death, noting that they "serve neither God nor Satan but look solely to their own interests", as Shelob does; she is "the Death and Chaos that would overcome all".