Niflhel is the name of a location in Norse mythology

Norse mythology

Norse mythology, a subset of Germanic mythology, is the overall term for the myths, legends and beliefs about supernatural beings of Norse pagans. It flourished prior to the Christianization of Scandinavia, during the Early Middle Ages, and passed into Nordic folklore, with some aspects surviving...

 which appears in the eddic poems

Poetic Edda

The Poetic Edda is a collection of Old Norse poems primarily preserved in the Icelandic mediaeval manuscript Codex Regius. Along with Snorri Sturluson's Prose Edda, the Poetic Edda is the most important extant source on Norse mythology and Germanic heroic legends, and from the early 19th century...

 Vafþrúðnismál

Vafþrúðnismál

In Norse mythology, Vafþrúðnismál is the third poem in the Poetic Edda. It is a conversation in verse form conducted initially between the Æsir Odin and Frigg, and subsequently between Odin and the giant Vafþrúðnir...

and Baldrs draumar

Baldrs draumar

Baldrs draumar or Vegtamskviða is an Eddic poem, contained in the manuscript AM 748 I 4to. It relates information on the myth of Baldr's death in a way consistent with Gylfaginning....

, and also in Snorri Sturluson

Snorri Sturluson

Snorri Sturluson was an Icelandic historian, poet, and politician. He was twice elected lawspeaker at the Icelandic parliament, the Althing...

's Gylfaginning

Gylfaginning

Gylfaginning, or the Tricking of Gylfi , is the first part of Snorri Sturluson's Prose Edda after Prologue. The Gylfaginning deals with the creation and destruction of the world of the Norse gods, and many other aspects of Norse mythology...

. Niflhel overlaps with the notions of Niflheimr and Hel.

Gylfaginning

In Gylfaginning by Snorri Sturluson

Snorri Sturluson

Snorri Sturluson was an Icelandic historian, poet, and politician. He was twice elected lawspeaker at the Icelandic parliament, the Althing...

, Gylfi

Gylfi

In Norse mythology, Gylfi, Gylfe, Gylvi, or Gylve was the earliest king in Scandinavia recorded. The traditions on Gylfi deal with how he was tricked by the gods and his relations with the goddess Gefjon.-The creation of Zealand:...

, the old king of Scandinavia

King of Scandinavia

King of Scandinavia may refer to:* MS King of Scandinavia, a Danish cruiseferry* The monarch of one of the Scandinavian countries:** King of Denmark** King of Iceland** King of Norway** King of Sweden...

, receives an education in Norse mythology from Odin

Odin

Odin is a major god in Norse mythology and the ruler of Asgard. Homologous with the Anglo-Saxon "Wōden" and the Old High German "Wotan", the name is descended from Proto-Germanic "*Wodanaz" or "*Wōđanaz"....

 himself in the guise of three men. Gylfi learns from Odin (as Þriði) that Odin gave the first man

Ask and Embla

In Norse mythology, Ask and Embla —male and female respectively—were the first two humans, created by the gods. The pair are attested in both the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century by Snorri Sturluson...

 his spirit, and that the spirits of just men will live forever in Gimlé

Gimlé

In Norse mythology, Gimlé was a place where the survivors of Ragnarök were to live. It is mentioned in the Prose Edda and Völuspá and described as the most beautiful place on Earth, more beautiful than the Sun....

, whereas those of evil men will live forever in Niflhel:

Vafþrúðnismál

In Vafþrúðnismál, Odin has wagered his head in a contest of wits with the giant (jotun) Vafþrúðnir

Vafþrúðnir

Vafþrúðnir is a wise jötunn in Norse mythology. In the Poetic Edda poem Vafþrúðnismál, Vafþrúðnir acts as both Odin's host and opponent in a deadly battle of wits, resulting in Vafþrúðnir's defeat....

. Odin asks Vafþrúðnir whether he can tell all the secrets of the gods and giants, and Vafþrúðnir answers that he can do so since he has been to all the nine worlds

Norse cosmology

The cosmology of Norse mythology has 'nine homeworlds', unified by the world tree Yggdrasill. Mapping the nine worlds escapes precision because the Poetic Edda often alludes vaguely, and the Prose Edda may be influenced by medieval Christian cosmology...

, including Niflhel:

Vafþrúðnir kvað: 43. "Frá jötna rúnum ok allra goða ek kann segja satt, því at hvern hef ek heim of komit; níu kom ek heima fyr Niflhel neðan; hinig deyja ór helju halir."

Vafthruthnir spake: 43. "Of the runes of the gods and the giants' race The truth indeed can I tell, To nine worlds came I, to Niflhel beneath, The home where dead men dwell."

Baldrs draumar

Though not a part of the Codex Regius

Codex Regius

Cōdex Rēgius is an Icelandic manuscript in which the Poetic Edda is preserved. It is made up of 45 vellum leaves, thought to have been written in the 1270s. It originally contained a further 8 leaves, which are now missing...

, in the poem Baldrs draumar, Odin makes a visit to Niflhel himself in order to enquire about the bad dreams of his son Baldr:

Upp reis Óðinn, alda gautr, ok hann á Sleipni söðul of lagði; reið hann niðr þaðan niflheljar til; mætti hann hvelpi, þeim er ór helju kom.

2. Then Othin rose, the enchanter old, And the saddle he laid on Sleipnir's back; Thence rode he down to Niflhel deep, And the hound he met that came from hell.