Bonemass

Black ForestMeadowsSwampPlains
Duration
–
Methodology
Data Methodology

A world event with no spawn table of its own.

When it fires

Unlocked byFrom the start
BiomesBlack Forest, Meadows, Swamp, Plains
Duration–
WhereAnywhere in the right biome

Bonemass is one of the Valheim world events that carries no spawn table. It changes the music and weather rather than sending anything at you, which is why it never shows up in raid lists even though the game treats it as the same kind of event.

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Bonemass FAQ

What unlocks Bonemass?

From the start. The game records that as a world key, and the raid joins the pool from then on.

How long does Bonemass last?

–. It can fire in Black Forest, Meadows, Swamp, Plains, and everything it sends walks in from outside the event radius rather than appearing on top of you.