> For the complete documentation index, see [llms.txt](https://chunkedworld.gitbook.io/chunkedworld/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chunkedworld.gitbook.io/chunkedworld/the-wider-world/the-nether.md).

# The Nether

Portals, world border, and how Nether terrain restores itself as you travel

Build a nether portal anywhere and light it, the same as vanilla. Coordinates scale 1:8. The nether world is bounded by a world border 620 blocks across, centered on 0,0.

* Terrain generates around you as you travel - no Chunk Generators needed here. Crossing through a portal restores nether chunks automatically and silently.
* The Nether is shared and unowned, like the wilderness. All nether biomes and their mobs work as expected - piglins, hoglins, endermen in warped forests, and so on - and nether fortresses spawn their full mob roster, including wither skeletons.

{% hint style="info" %}
**Portal etiquette:** a portal can't drop you into another player's island unless a portal already exists there. You can't use nether travel to bypass island protection.
{% endhint %}

The Nether unlocks at Freeman, the same rank that opens the [wilderness](/chunkedworld/the-wider-world/wilderness.md).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://chunkedworld.gitbook.io/chunkedworld/the-wider-world/the-nether.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
