CurseForge · Minecraft mod
Newfound Underground
New cave biomes and features, giant roots, explosive coal and little rat things.
Quick answer
Which Newfound Underground release should I use?
Newfound Underground foundground-0.2-1.21.1.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Newfound Underground required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Newfound Underground foundground-0.2-1.21.1.jar need?
foundground-0.2-1.21.1.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Newfound Underground without breaking your instance.
Built for Newfound Underground foundground-0.2-1.21.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use foundground-0.2-1.21.1.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside foundground-0.2-1.21.1.jar. It opens that exact file at the source.
About this project
What does Newfound Underground add?
This mod adds new features to the underground including blocks, mobs and biomes
-Explore the petrified root systems, the remains of ancient trees filled with infested iron ore and thorny petrified vines
-Explore the sulphur slime caves, full of flammable blocks, pools of slime and propellant geysers! It isn't actually inspired by the vanilla biome at all, I simply procrastinated on this mod far too much!
-Mine dense coal ore, but be careful of the explosive gas it releases!
-Keep whelps out of bright light, and feed skeletons to rogerfish to shred them into bonemeal!
-And more!
Project description from CurseForge.
Pick your setup
Newfound Underground by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Newfound Underground versions and loaders
foundground-0.2-1.21.1.jar
11 Nov 2026
foundground-0.1-1.20.1.jar
21 May 2026
Looking for an older file? The official CurseForge project page is in Resources.