A katabasis or catabasis (Ancient Greek: κατάβασις, romanized: katábasis, lit. 'descent'; from κατὰ (katà) 'down' and βαίνω (baínō) 'go') is a journey to the underworld. Its original sense is usually associated with Greek mythology and classical mythology more broadly, where the protagonist visits the Greek underworld, also known as Hades. The term is also used in a broad sense of any journey to the realm of the dead in other mythological and religious traditions. A katabasis is comparable to a nekyia or necromancy, where one experiences a vision of the underworld or its inhabitants; a nekyia does not generally involve a physical visit.
One of the most famous examples is that of Odysseus, who performs something on the border of a nekyia and a katabasis in book 11 of the Odyssey; he visits the border of the realms before calling the dead to him using a blood rite, with it being disputed whether he was at the highest realm of the underworld or the lowest edge of the living world where he performed this.

The trip to the underworld is a mytheme of comparative mythology found in a diverse number of religions from around the world.[1] The hero or upper-world deity journeys to the underworld or to the land of the dead and returns. The nature of the quest differs; sometimes an object or the rescue of a loved one is sought, while in other stories knowledge and secret revelations is the goal. The ability to enter the realm of the dead while still alive, and to return, is proof of the classical hero's exceptional status as more than mortal. A deity who returns from the underworld demonstrates eschatological themes such as the cyclical nature of time and existence, or the defeat of death and the possibility of immortality.[2]
A katabasis is arguably a specific type of the famous Hero's journey. In the Hero's journey, the hero travels to a forbidden, unknown realm; a katabasis is when that place is specifically the underworld. Pilar Serrano uses the term to encompass brief or chronic stays in the underworld as well, such as those of Lazarus, and Castor and Pollux.[1]
A katabasis is in general followed by an anabasis (a going up) to distinguish itself from death; very rarely does a living hero decide to stay in the Underworld forever.
Famous examples of katabases in Greek mythology include Orpheus, who enters the underworld in order to bring Eurydice back to the world of the living, and Odysseus, who seeks to consult with the prophet Tiresias for knowledge. In Roman mythology, Aeneas seeks out his father Anchises to learn of prophecies of his fate and that of the Roman Empire.
The Initiatory Underworld
– The descent of the knight into the underworld to undergo a major initiation
The Descent into the Underworld
The Aeneid
The katabasis of Virgil's Aeneid occurs in book 6 of the epic. Unlike Odysseus, Aeneas seeks to enter the Underworld, rather than bring the spirits of the dead to him through sacrifice. He begins his journey with a visit to the Cumaean Sibyl (a priestess of Apollo) and asks for her assistance to journey to the Underworld and visit his father.[18] The priestess tells him to find the Golden Bough, and if the branch breaks off in his hands, he is fated to go to the Underworld. She also tells Aeneas to bury his dead friend and prepare cattle for sacrifice.[19] When Aeneas reaches the forest to find the golden branch, he is guided by birds to the tree, and the branch breaks into his hand. The branch, however, does not easily break off as the Sibyl said would happen to a person fated to go to the Underworld – the branch is described as "cunctantem" ("hesitant"). The implications of this have been debated by scholars – some arguing that it means that Aeneas is not as heroic as he needs to be, others arguing that Aeneas has not yet fulfilled his destiny, and several arguing that he is still a hero, with this section added purely for drama. Aeneas buries Misenus and he and the Sibyl prepare a sacrifice to enter the Underworld.[20]
Aeneas first encounters several beings and monsters as he enters: Sorrows, Heartaches, Diseases, Senility, Terror, Hunger, Evil, Crime, Poverty, Death, Hard Labor, Sleep, Evil Pleasures of Mind, War, Family Vengeance, Mad Civil Strife, Scylla, Briareus, the Hydra, the Chimaera, the Gorgons, the Harpies, and Cerberus.[21] Next, Aeneas encounters Charon, the ferryman who leads souls into the Underworld, and the mass of people who are unburied.[22] His first conversation is with Palinurus, a man of his crew who fell overboard and died on their journey. Palinurus begs Aeneas to bury him so he can enter the Underworld.[23] The Sibyl convinces Charon to carry them across the river Styx in exchange for the golden bough.[24] Aeneas encounters Minos pronouncing judgment on souls and the souls that died for love: Phaedra, Procris, Eriphyle, Evadne, Pasiphae, Laodamia, Caeneus, and Dido.[25] Next, Aeneas sees heroes of battle: Tydeus, Parthenopaeus, Adrastus, Glaucus, Medon, Thersilochus, Polyboetes, Idaeus, Agamemnon, and Deiphobus.[26] The Sibyl then leads Aeneas to Elysium, the place for the blessed. On the way, they pass the place for tortured souls and the Sibyl describes some of the tortured's fates. Tityos has his liver eaten by a vulture daily. Pirithous and Ixion have a rock constantly hanging over them at all times. Many others face the punishment of moving rocks, being stretched, and being tied to wheels.[27] The two then enter the Estates of the Blessed, where they see a utopian land where heroes and good people reside. There, Aeneas finds his father, who tells him of the rich history of Rome to come.[28]

The Metamorphoses
In Ovid's poetic collection of mythological stories, he includes accounts of katabasis as well. In book 4, he includes an account of Juno's descent to Hades to bring her perceived justice to Ino.[29] Ovid describes Juno's path to the underworld, noting Cerberus' presence.[30] Juno seeks the Furies (Tisiphone, Megara, and Alecto) to destroy the house of Cadmus, namely Ino and her husband Athamas. While in the underworld, Juno passes several souls who are being punished in Hades. Hades is also a person, and he needs to get rid of those souls because he needs them to fully recover (Tantalus, Sisyphus, Ixion, and the Belides).[31] When the Furies agree to Juno's request, she happily returns to the heavens, where she is purified by Iris.[32]
The next major katabasis in the Metamorphoses occurs in book 5 by Proserpina, the daughter of Ceres, who is kidnapped by Dis. As Proserpina is picking flowers, Pluto falls in love with her and decides to grab her and take her to the underworld in his chariot. Worried about her now-missing daughter, Ceres becomes distraught and searches for Proserpina.[33]
When Ceres discovers the kidnapping, she goes to Jove to attempt to get Proserpina back. He agrees that she should be returned as long as Proserpina has not touched any food in the underworld. However, she has eaten pomegranate seeds, and cannot be returned to Ceres.[34] To ensure compromise between Ceres and Dis, Jove divides the year into halves and commands that Proserpina must spend equal parts of the year between her mother and her husband. From that point on, Proserpina makes annual trips to the underworld, spending half the year there.[35]
Ovid also briefly mentions the katabasis of Hercules in book 7. Ovid is telling the etiological story of Medea's poison for Theseus. When Hercules traveled to the Underworld to capture Cerberus as one of his 12 Labours, Cerberus spread white foam from his mouths, which grew poisonous plants.[36]
The katabasis of Orpheus in book 10 is the last major inclusion of the theme by Ovid in the Metamorphoses. Orpheus is distraught by the death of his wife, Eurydice. He enters the Underworld through the Spartan Gates and visits Dis and Proserpina to beg for the return of his bride. Overcome by the heartfelt song of Orpheus, Proserpina calls Eurydice to leave with her husband–on the condition that he does not look back until he reaches the exit. When he looks back, his wife disappears, and he is pained by grief for her death a second time.[37]

Mesopotamian mythology
- Enkidu, in the Sumerian text Gilgamesh, Enkidu, and the Netherworld and in the final tablet of the Standard Babylonian Epic of Gilgamesh
- Inanna/Ishtar, in an attempt to overthrow her sister, Ereshkigal, queen of the netherworld
- Nergal, to make amends for disrespecting Ereshkigal
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Greek mythology and Roman mythology
- Adonis is mourned and then recovered by his consort Aphrodite
- The god Dionysus, to rescue Semele from Hades, and again in his role as patron of the theater
- Heracles during his 12th labor, on which occasion he also rescued Theseus
- Heracles, to rescue Alcestis from Hades
- Orpheus, to rescue Eurydice from Hades
- Psyche
- Pelops, son of Tantalus
- Odysseus
- Aeneas, to speak to his father in the Aeneid
- Theseus and Pirithous try to abduct Persephone; they fail, and only Theseus is rescued by Heracles
- Persephone, in a cyclic patterns of death-and-rebirth
Christianity
- Peter in the Apocalypse of Peter
- Thomas in the Apocalypse of Thomas
- Jesus in the Pistis Sophia
- Paul in the Apocalypse of Paul
- Jesus, during the Harrowing of Hell, described in the Gospel of Nicodemus
- Dante Alighieri as protagonist of his own poem, the Divine Comedy
Norse religion and Finnish mythology
- Odin
- Baldr
- Hermóðr
- Helreið Brynhildar
- Lemminkäinen's rescue from Tuonela by his mother
- Väinämöinen's and other wizards several trips to Tuonela
- Pwyll's descent into Annwn in the Welsh Mabinogion
- Preiddeu Annwfn, King Arthur's expedition to Annwfn as recounted in the Book of Taliesin