Norse Cosmology Basics: The Nine Worlds and Yggdrasil

Norse cosmology is the old Scandinavian picture of how the universe began, how it is held together and how it will end. Its center is Yggdrasil, an enormous sacred tree, and around it sit the Nine Worlds: homes for gods, humans, giants, elves, dwarfs and the dead. The surprising part is that the surviving texts never give a tidy list or a map. This guide explains what the sources say, what later writers added, and how to hold the picture without forcing it into a diagram.

TL;DR

• Yggdrasil is the sacred tree at the center of Norse cosmology. All else exists around it, including the Nine Worlds.
• The medieval texts mention nine worlds but never list them explicitly, so every list you see is a scholarly or popular reconstruction.
• The cosmos has a story arc: a void, a primal giant, a created world, a long middle age, and an ending (Ragnarök) followed by renewal.
• Treat the worlds as states and territories of a living system, not as rooms on a blueprint. The sources themselves are fluid.

Table of Contents

• Where our knowledge of Norse cosmology comes from
• How the cosmos begins
• Yggdrasil: the tree at the center
• The Nine Worlds, with honest caveats
• Time, fate and the end of the world
• A note on who this tradition belongs to
• Our perspective: cosmology as a map you walk, not a chart you memorize
• Ways to practice with the cosmology
• Studying Norse shamanism with us
• FAQ
• Sources

Where our knowledge of Norse cosmology comes from

Before any list of worlds, it helps to know how thin and late the written record is. Most of what we call Norse cosmology comes from the Poetic Edda and the Prose Edda, compiled in the 13th century from older traditions. Christianity had already reached Scandinavia by then, roughly in the 10th and 11th centuries, and the writers were Christians recording a world that had changed.

That has three practical consequences:

1. Poems and prose disagree. The poems are compressed, allusive and sometimes contradictory. The Prose Edda, written by Snorri Sturluson, organizes the material into a more orderly story.
2. Snorri's order is not necessarily ancient order. Much of the neat structure you meet in popular guides is his, or a modern writer's tidying of him.
3. Gaps are real. When someone tells you exactly where Svartalfheim hangs on the tree, they are filling a gap, not quoting a source.

Hold that in mind and the rest becomes easier. You can enjoy the imagery without pretending it is a settled doctrine.

How the cosmos begins

The creation story in Gylfaginning starts with two realms on either side of an empty abyss called Ginnungagap: Muspelheim, a realm of fire, and Niflheim, a realm of ice and mist. Where heat met frost, the melting rime gave rise to the first being, the giant Ymir, and to the cow Auðumbla who fed him. From the cow's licking of the salt-ice emerged Búri, the ancestor of the gods.

Odin and his brothers then killed Ymir and built the world from his body. In the usual retelling, his flesh became the earth, his blood the seas, his bones the mountains, his skull the sky. Dwarfs were set to hold up the sky, and the sun and moon were set on their courses.

Two details are worth noticing:

• Creation is an act of violence and reuse. The world is made from a body, not spoken from nothing. Nature is not separate from the sacred; it is literally made of it.
• Fire and ice are both required. Life arises where opposites meet, which is a theme that repeats across the whole system.

Yggdrasil: the tree at the center

Yggdrasil is the answer to the question most readers actually type. The name is Old Norse Yggdrasill. A common interpretation is "Odin's horse," from one of Odin's names and a word for steed, which ties to the story of Odin hanging himself on the tree to gain knowledge of the runes. The exact etymology is debated, so treat it as the leading reading, not a closed case.

In the sources, Yggdrasil is an ash that holds the universe together. It is not just a symbol of life. It is a working structure, with inhabitants, roots, wells and damage.

The roots and the wells

The sources describe the tree's roots reaching into different places, and the poems and Snorri do not match perfectly. In the poem Grímnismál, the roots are placed in the realms of humans, giants and the dead. Snorri describes three wells: the Well of Urd near the gods' realm, Hvergelmir in Niflheim, and Mimir's well among the giants. A summary of these accounts shows how the pieces differ by source.

The Well of Urd matters most for inner work. It is where the Norns, the keepers of fate, gather. Each day they draw water and clay from it and tend the tree so it does not rot. Mimir's well holds wisdom, and Odin gave up an eye to drink from it.

The creatures in the branches

The tree is a whole ecosystem:

• Níðhöggr, a dragon, gnaws at the roots.
• Ratatoskr, a squirrel, runs up and down carrying messages, often insults, between the eagle at the top and the dragon below.
• An eagle sits in the crown, with a hawk between its eyes.
• Four stags browse the branches. Another stag, Eikþyrnir, and the goat Heiðrún are also named in the poems.

The point is not zoology. The tree is a circuit of communication, appetite and repair. The same trunk that feeds the world is also constantly being eaten, and constantly being tended.

The Nine Worlds, with honest caveats

The poem Völuspá and Gylfaginning refer to nine worlds, but no text gives you the list. Scholars therefore propose identifications. The most common set is:

The Norse cosmology overview notes that the usual proposals include Asgard, Vanaheim, Alfheim, Midgard, Jotunheim, Muspelheim, Svartalfheim and Niflheim, with Hel or Nidavellir sometimes filling the ninth place. Notice that this is a proposal, not a quotation.

Why diagrams disagree

If you have seen three diagrams with three arrangements, nothing is wrong with your eyes. The scholar Hilda Ellis Davidson points out that confusion comes from trying to merge poetic, shifting images from different sources into one static map. The placement of the worlds was probably never rigid.

So here is a workable way to hold it:

• Vertical reading: gods above, humans in the middle, the dead and the giants below or beyond.
• Horizontal reading: Midgard in the center, ringed by sea, with Jotunheim at the far edge.
• Elemental reading: fire (Muspelheim) and ice (Niflheim) as the two poles of the creation story.

Use whichever serves the question you are asking, and let go of the idea that one is correct.

Time, fate and the end of the world

Norse cosmology is not a static stage. It has a beginning and an end.

Fate. The Norns shape fate at the Well of Urd. Fate here is not a fixed script handed down from above. It is something woven, tended and carried forward, and even the gods are subject to it.

Ragnarök. The texts foretell a final conflict in which the old order breaks down: monsters are loosed, gods fall, and the world is consumed by fire and flood. Both the poems and Snorri then describe a green world rising again, with survivors and a new generation. The cosmos in this telling is cyclical, not a one-way road to destruction.

For anyone approaching this as a living path, the cycle is the real teaching. Creation, maintenance, collapse and renewal are one movement, which is how nature itself behaves.

A note on who this tradition belongs to

Two of the questions people ask next are whether Norse paganism is racist and who "came first," Jesus or Odin. Both deserve plain answers.

Norse religion itself is not inherently racist. But modern Heathenry, the contemporary revival, has been a target for co-optation by white supremacist movements, according to a 2018 report that also notes most U.S. practitioners are inclusive. Inclusive Heathens reject "folkish" groups that claim the religion belongs only to people of Northern European ancestry. One academic study of inclusive practice finds that ancestor veneration need not mean pride in bloodline: it can mean gratitude, ecological conscience and moral community.

As for Odin and Jesus, they belong to different worlds. Odin is a major figure in older Germanic and Norse religion, which was there before Christianity reached Scandinavia, and the shift to Christianity there happened over roughly the 10th and 11th centuries, according to the same Political Research Associates report. They do not compete on a timeline, because they sit in different cultures.

If you want to use Old Norse words, be modest about it. Greetings like heill come from medieval Icelandic, a late form of Old Norse, so they do not prove what a Viking Age speaker would say.

Our perspective: cosmology as a map you walk, not a chart you memorize

At Sacred Paths, we teach Andean and Norse shamanism side by side, on a rewilded 18th-century farm in Burgundy. People often arrive wanting the one correct diagram, and we understand the urge. A clean chart feels like safety.

But the sources do not hand us one, and we think that is a gift. A cosmology built around a living tree, tended wells and creatures in constant motion invites a different relationship: you learn it by standing in a forest, not by filing it.

Here is how we approach it with students:

• Start with the tree, not the list. Sit with an actual tree for an hour. Notice what feeds it, what eats it, what visits it. The Norse picture will make more sense afterward.
• Treat the worlds as territories of experience. Ice and fire, dead and living, wild and cultivated: all of these are present in a single human life. We find the images useful as a language for transition, grief and renewal.
• Stay honest about sources. We separate what the Eddas say, what later writers added, and what we have learned from practice. Mixing those without saying so is how myths turn into marketing.
• Keep the tradition open. The path belongs to anyone who comes to it with respect and gratitude, not to a bloodline.

The point is not to believe in nine literal places. It is to let a very old story teach you how to hold creation and collapse in the same hand.

— Angell

Ways to practice with the cosmology

Reading gets you only so far. If the material interests you, here are respectful, low-stakes ways to work with it:

1. Map your own tree. Draw Yggdrasil and place in its roots what feeds you (people, places, ancestors), and in its branches what you are growing. Mark where something is gnawing at the roots.
2. Ask the Well of Urd a question. Instead of asking for prediction, ask what you have inherited and what you are tending. This keeps fate as something woven, not decreed.
3. Try a single-rune reading. Our guide to rune divination with a reading journal shows how to draw one rune and write down what comes up.
4. Mark the turning year. The old cosmos was lived through seasons. Our piece on solstice rituals at home keeps it simple: one candle, one intention.
5. Learn what a blót is. If you want to understand how offering and gratitude work in practice, read about holding a blót ceremony today.

If you are curious about how a name like "spirit animal" fits (or does not fit) into this, our article on respecting Indigenous traditions around spirit animals deals with that carefully.

Studying Norse shamanism with us

If you want to go beyond reading, Sacred Paths Shamanic School offers a two-year initiatory path in Andean and Norse shamanism, taught through personal practice, nature and a community circle rather than passive coursework. The programs are EarthWalker and FireKeeper, and you can see how they work on the Sacred Paths Shamanic School page.

If you would like to start smaller, there is the Monthly Shamanic Circle, or one-to-one work through shamanic and spiritual coaching, which is listed at 395 $ one-off.

FAQ

What are the nine worlds in Norse cosmology?

The usual list is Asgard, Vanaheim, Alfheim, Midgard, Jotunheim, Muspelheim, Svartalfheim, Niflheim and Hel (sometimes Nidavellir in place of Hel). The old texts mention nine worlds but do not name them all, so this is a scholarly reconstruction. Expect different sources to vary.

What does Yggdrasil mean?

Yggdrasil is the great sacred tree that stands at the center of the cosmos and around which the Nine Worlds exist. The name is usually read as "Odin's horse," linked to Odin's hanging on the tree, though the etymology is debated. In practice, it stands for a connected, living universe that needs constant tending.

Is Norse paganism racist?

No. The ancient religion is not defined by race, and most U.S. practitioners of modern Heathenry are inclusive. A small subset of groups do promote white supremacy and misuse Norse symbols, and inclusive Heathens explicitly reject them.

Is Norse cosmology a single, fixed system?

No. The poems and the Prose Edda give different and sometimes contradictory images, and they were written down in the 13th century from older oral traditions. Scholars generally see the cosmos as fluid and evolving, which is why diagrams disagree.

Sources

• Norse cosmology, Wikipedia
• Yggdrasil, Wikipedia
• Yggdrasil, The Cosmic Tree of Life, Vikingr.org
• White Supremacy's Old Gods, Political Research Associates
• Inclusive Heathens Practice Ancestor Veneration, But Not Pride in Ancestry
• Heill, @fjorn-the-skald on Tumblr

Recommended

• Rune Divination: Draw One Rune and Build a Reading Journal
• Blót Ceremony: What It Is and How to Hold One Today