Artifact
Gjallarhorn
The horn blown by Heimdall, calling the gods together for Ragnarok.

Overview
Gjallarhorn turns the doom signs into an alarm for divine action. Chapter 51 says Heimdall rises and blows the horn strongly, causing the gods to assemble; Voluspo also places the horn in the passage of Yggdrasil trembling and divine fear.
Relationships
- Heimdallblows
Heimdall blows Gjallarhorn and calls the gods together.
Story appearances
- RagnarokHorn calling the gods
After Gjallarhorn is blown, the gods assemble.
Ancient sources
MythWeave distinguishes ancient-source evidence from later adaptations and modern interpretation.
- Snorri Sturluson, Prose Edda, Gylfaginning, Chapter 51, Heimdall blows Gjallarhorn, the gods assemble, Odin rides to Mimir’s Well and Yggdrasil trembles
- Anonymous, Poetic Edda, Voluspo, Bellows stanzas 40-58, wolves, Garm, Gjallarhorn, Yggdrasil, Hrym, Naglfar, Loki, Surtr, Odin and Fenrir, Vidar, Thor and Jormungandr