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Mod

Alex's Caves

Explore six new rare cave biomes hidden under the surface of the Overworld...

AwakeNode Team · Reviewed by Harry · Updated 15 Oct 2026

Works with
Forge, NeoForge
Minecraft
1.20.1
Downloads
8.7M

Modpacks with Alex's Caves

Order a server with one of these and it's set up with the modpack, Alex's Caves included, already installed.

Prehistoric WorldForge · Minecraft 1.20.1485K downloads

Alex's Caves is an adventure-focused Minecraft mod that adds six rare, distinct cave biomes hidden deep beneath the Overworld surface. Each biome introduces unique mobs, blocks, and world generation features to expand your underground exploration.

Installing Alex's Caves

On AwakeNode

  1. Download the version of Alex's Caves for your server's software and Minecraft version from its Modrinth page.
  2. Open your server's Files tab, go to the mods folder and upload the .jar file. You can also upload it over SFTP.
  3. Restart your server from the Console tab.

On other hosts / manually

  1. Download the correct version of Alex's Caves for 1.20.1 (Forge or NeoForge) from Modrinth.
  2. Connect to your server via SFTP.
  3. Upload the downloaded .jar file into your server's /mods directory.
  4. Restart your server to load the new content.

Common issues

  • Mod version mismatch: Ensure you are using the exact version of the mod compatible with Minecraft 1.20.1. Using an incorrect version will cause the server to crash on startup.
  • Missing dependencies: Alex's Caves may require specific library mods to function. Check the Modrinth page for any required dependencies and install them alongside the main mod.
  • World generation conflicts: If you are adding this mod to an existing world, new biomes will only generate in newly loaded chunks. You may need to travel to unexplored areas to find them.

Performance

Alex's Caves introduces significant new world generation and entities, which can increase the load on your server's CPU and RAM. If you experience lag or TPS drops, ensure your server has sufficient memory allocated. On AwakeNode, upgrading your plan will automatically adjust your Xmx settings. If you are on another host, you must manually edit your startup command to increase the -Xmx flag. To add your own JVM flags, set a custom startup command in your server's Startup tab.

Questions

Does Alex's Caves work on Paper or Spigot?+

No, Alex's Caves is a Forge and NeoForge mod and will not function on Paper, Spigot, or Bukkit servers.

Can I add Alex's Caves to an existing world?+

Yes, you can add it to an existing world, but the new cave biomes will only generate in chunks that have not been explored yet.

How much RAM does this mod require?+

We recommend at least 4GB to 6GB of RAM for a smooth experience, especially if you are running other mods alongside it.

Where can I find the configuration files?+

Configuration files are generated in the /config folder after the first time you launch the server with the mod installed.

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Alex's Caves on Modrinth

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