In
Norse mythology, 'Yggdrasil' (
Old Norse 'Yggdrasill', ; the extra ''-l'' is a
nominative case marker) is the "
World Tree", a gigantic
ash tree, held to connect all the
nine worlds of
Norse cosmology. Sometimes it is called 'MÃmameiðr' or 'Lérað'. According to mythology,
Ãsgard,
Ãlfheim and
Vanaheim rest on the branches of Yggdrasil. The trunk is the world-axis piercing through the center of
Miðgarðr (often called 'Midgard'), around which
Jötunheim is situated, and below which lies
Niðavellir, also called
Svartálfheim. The three roots stretch down to
Hel,
Niflheim, and
Muspelheim, although only the first world hosts a spring for Yggdrasil.
Etymology and alternative names
The most commonly accepted etymology of the name is ''ygg'' "terrible" + ''drasil'' "steed". ''Yggr'' is taken to be an epithet of
Odin, giving a meaning of "Odin's steed", taken to refer to the nine nights Odin is said to have spent hanging from the tree in order to find the
runes. The gallows are sometimes described in
Old Norse poetry as the "horse of the hanged." Another interpretation of the name is "terrible horse", in which case the association with Odin may be secondary. A third interpretation, with etymological difficulties, is "yew-column", associating the tree with the ''
Eihwaz'' rune ᛇ
''
Fjölsvinnsmál'', a poem in the
Poetic Edda, refers to the World Tree as ''Mimameid'' (
ON: ''MÃmameiðr'', "
MÃmir's tree" ). Most probably, the tree is also identical to ''
Lærad'' (
ON: ''Læraðr'') a tree whose leaves and twigs reach down to the roof of
Valhalla and provide food for the goat
Heiðrún and the stag
Eikþyrnir that both live on the roof.
Yggdrasil in the Edda
Three roots supported the trunk, with one passing through Niflheim, one through
Jotunheim and one through Hel. Beneath the Asgard root lay the sacred
Well of Urd (''Urðabrunnr''), and there dwelt the three
Nornir, over whom even the gods had no power, and who, every day, watered the tree from the primeval fountain, so that its boughs remained green. Beneath the Jotunheim root lay the spring or well of MÃmir (''MÃmisbrunnr''); and beneath the Hel root the well ''
Hvergelmir'' ("the Roaring Cauldron").
In the top of the tree was perched a giant rooster, or more often an
eagle named
Viðópnir, and sitting upon its forehead was a hawk named ''Vedrfolnir'' (Old Norse: ''
VeðrfolnÃr''). The Niflheim roots of Yggdrasil were gnawed at by a dragon,
NÃðhöggr.
Ratatosk, a
squirrel, scurried up and down the tree between NÃðhöggr and the eagle, forwarding insults between them. There were also
four stags feeding on the leaves of Yggdrasil: Duneyrr, Durathror,
Dvalin, and Dainn.
The name Yggdrasil, interpreted as "Odin's steed," is taken to refer to Odin's self-sacrifice described in the
Hávamál (although the tree is not explicitly identified as Yggdrasil):
:''I hung on that windy tree for nine nights wounded by my own spear.''
:''I hung to that tree, and no one knows where it is rooted.''
:''None gave me food. None gave me drink. Into the abyss I stared''
:''until I spied the runes. I seized them up, and, howling, fell.''
Germanic sacrifices

This illustration from a
17th century Icelandic manuscript shows Yggdrasill with the assorted animals that live in it.
The Germanic custom of hanging sacrificial victims from trees was probably in reference to this myth (see also
Human sacrifice,
Tyr). In
1950, the preserved corpse of the so-called "
Tollund Man" was found in a peat
bog in
Jutland. The excellent level of preservation made it possible to deduce that he had been ritually hanged and respectfully consigned to the bog, not more than a hundred yards from where a ritually hanged woman had been found some decades previously.
Ragnarök
Main articles: Ragnarök
Yggdrasil is also central in the
myth of
Ragnarök, the
end of the world. The only two humans to survive Ragnarök (there are some survivors among the
gods),
Lif and Lifthrasir, are able to escape by sheltering in the branches of Yggdrasil, where they feed on the dew and are protected by the tree.
Germanic veneration of trees
Yggdrasil apparently had smaller counterparts as the
Sacred tree at Uppsala, the enormous evergreen of unknown species that stood at the
Temple at Uppsala and ''
Irminsul'', which was an
oak venerated by the pagan
Saxons and which was said to connect heaven and earth. The Old Norse form of ''Irmin'' was ''Jörmun'' and interestingly, just like ''Ygg'', it was one of Odin's names. It appears, then, that ''Irminsul'' may have been representing a world tree corresponding to Yggdrasil among the pagan Saxons.
Germanic cultural fondness for tree symbolism appears to have been widespread, with other patron trees such as
Thor's Oak appearing in surviving accounts (
8th century) and
Ahmad ibn Fadlan's account of his encounter with the
Scandinavian
Rus tribe in the early
10th century, describing them as tattooed from "fingernails to neck" with dark blue "tree patterns."
Parallels
Many people have discussed the parallels between Odin's self-sacrifice in search of knowledge and the
Crucifixion, particularly as Odin and
Jesus were pierced with a spear (although Jesus was pierced after he had already died.) However, while surviving texts may have possibly been influenced by
Christianity, the myth certainly has pre-Christian origins. There are other apparent parallels between
Norse Mythology and Christianity: a slaying and resurrection (
Baldr) and an apocalyptic battle at Armageddon (
Ragnarok).
Potential origins
It has been proposed as an explanation for the World Tree myth that the
Cirrus clouds – to a ground standing observer appearing to be virtually stationary on the sky – were imagined to be the branches of a gigantic tree, turned seemingly pale the same way that far away mountains do. Accordingly, rain was held to be the
dew dropping from the World Tree. Two old
German synonyms for clouds, ''Wetterbaum'' and ''Regenbaum'' (meaning ''Weather Tree'' and ''Rain Tree''), are said to attest to this hypothesis.
Modern popular culture
Although depictions vary widely, Yggdrasil is generally portrayed in modern popular culture as a large tree with great power.
See also
★
Axis mundi
★
Banyan
★
Irminsul
★
Maypole
★
Thor's oak
★
Sacred grove
★
World tree
★
Fleur de lys
★
Palmette
★
NÃðhöggr
★
Boktai
★
Nordrassil