The Irminsul: How Charlemagne Felled the Saxons' Sanctuary

According to Frankish sources the Irminsul was a sacred object of the Saxons, probably an upright tree trunk or a wooden pillar. The name can be read as "great pillar" or "pillar of Irmin" – irmin is an old Germanic word for "mighty, all-encompassing", which also appears in the tribal name of the Herminones. It was destroyed in 772, right at the start of Charlemagne's Saxon wars.

What the sources report

The Royal Frankish Annals and Einhard report briefly: Charlemagne took the Eresburg (near Marsberg in the Sauerland), felled the Irminsul, and seized a treasure of gold and silver kept there. A later chronicler, Rudolf of Fulda, interprets the pillar as a "world pillar that supports, as it were, everything" – an image of the tree or pillar linking heaven and earth.

"universalis columna quasi sustinens omnia" – "an all-encompassing pillar that supports, as it were, everything"Rudolf of Fulda, Translatio S. Alexandri (public domain, own translation)

Kinship with Yggdrasil?

The idea of a world pillar or world tree holding the cosmos together appears later in the North too: Yggdrasil, the world ash of the Edda. Both belong to the same Germanic imagery of the cosmos as a tree or axis. But one must not simply equate them: we know the Irminsul only from hostile Frankish sources, and Yggdrasil only from Icelandic texts 400 years younger and shaped by Christianity. The resemblance is real; the equation "Irminsul = Yggdrasil" remains interpretation.

A symbol of Christianisation

The destruction of the Irminsul was no accident but a statement. Whoever wished to subject a people struck at its sanctuary. Charlemagne's Saxon wars dragged on for over 30 years (772–804), with mass baptisms, deportations, and the infamous bloody assize of Verden (782, disputed in its interpretation). The Irminsul stands at the beginning of this long, violent transition from the old belief to Christianity in northern Germany – the very "development" that ended Germanic belief.

The Irminsul remains a shadow: mighty enough that it had to be felled, yet so poorly recorded that we know it only in outline. That is precisely what makes it an honest symbol – for the old belief and for what was lost with it.

Read more with us

The Externsteine – an invented cult site? · The Donar oak & Boniface · Yggdrasil – the world tree · The Cherusci & Arminius · The Germanic feasts.

Sources & literature

Annales regni Francorum (772); Einhard, Vita Karoli Magni; Rudolf of Fulda, Translatio S. Alexandri; Rudolf Simek, Dictionary of Northern Mythology; quotes public domain or own translation.

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