How do I install ETERNAL CAVE?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does ETERNAL CAVE work with?

The listing gives Minecraft 1.21.1, 1.21.8, 1.21.4. This is the version stated by the author or source site, not something we verified ourselves.

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ETERNAL CAVE

Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.

by Phantom_0953 · on CurseForge

This mod adds new custom blocks, items and features to Minecraft, created with MCreator. It is designed to expand the gameplay with creative content while…

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for NeoForge only.

Minecraft 1.21.8Newest
Minecraft 1.21.4
Minecraft 1.21.1

⬇ Download for 1.21.8 ⬇ Download for 1.21.4 ⬇ Download for 1.21.1

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

This mod is an experimental expansion that introduces a brand new dimension hidden deep within Minecraft.
To enter, players must craft a mystical rune and use it to activate the portal found at the very center of the Ancient City in the Deep Dark.

Inside this dimension, the world is cloaked in eternal darkness, where new ores glimmer faintly among the shadows. Classic Minecraft mobs lurk here, deadlier than ever, while the terrain is scarred by the massive remains of giant fossil carcasses and dotted with eerie lava ponds.

This project is still in development and highly experimental. Future updates could bring unique biomes, custom mobs, dungeons, and more — and player feedback is welcome! Feel free to leave comments and suggestions to help shape this dark and mysterious new world.

crafting the activation rune

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 1.21.8, 1.21.4
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as eternal_cave-1.0.2-neoforge-1.21.1.jar — drop this file into the mods folder
Download size: 59 KB
Download link checked 2 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

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All Mods for Java All Minecraft Java mods Java mods for 1.21