# Nightmare Herald location (Prison of Eternity)

> Nightmare Herald: Codex in Prison of Eternity, Open Seas.

Canonical: https://lostark.wiki/map/prison-of-eternity-59029/nightmare-herald

**Codex**: Prison of Eternity, Dark Sanctum

- [Knight of Darkness 2](https://lostark.wiki/map/prison-of-eternity-59029/knight-of-darkness-2)
- [Underground Prison Spider 2](https://lostark.wiki/map/prison-of-eternity-59029/underground-prison-spider-2)

## NPCs

[Nightmare Herald](https://lostark.wiki/database/npcs/nightmare-herald-512357)

## Related

- [Prison of Eternity](https://lostark.wiki/map/prison-of-eternity-59029)
- [Map](https://lostark.wiki/map)
- [Home](https://lostark.wiki/)