CurseForge · Minecraft mod
Simple Structures: Caves
Adds structure to vanilla-style caves
Quick answer
Which Simple Structures: Caves release matches 1.21.1 Forge?
Simple Structures: Caves 1.2 for 1.21.1 targets 1.21.1 with Fabric, Forge, 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 Simple Structures: Caves 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 Simple Structures: Caves 1.2 for 1.21.1 need?
1.2 for 1.21.1 on 1.21.1 Forge. Every mod below is checked against that same setup.
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 Simple Structures: Caves without breaking your instance.
Built for Simple Structures: Caves 1.2 for 1.21.1 on 1.21.1 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.2 for 1.21.1. It targets 1.21.1 with Fabric, Forge, 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 1.2 for 1.21.1. It opens that exact file at the source.
About this project
What does Simple Structures: Caves add?
Adds small decorative structures, shelters, halts, and dungeons to the cave. At the moment, 34 structures have been added.
Roadmap
In the future, I plan to add:
Compatible with other cave mods
New structures and more variations.
more custom mobs and loot tables
Integration:
- Vanilla Biome
- Terralith
- Biomes O' Plenty
Project description from CurseForge.
Pick your setup
Simple Structures: Caves by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
3 loader builds26.1.1
3 loader builds26.1
3 loader builds1.21.11
3 loader builds1.21.10
3 loader builds1.21.1
3 loader builds1.20.1
4 loader builds1.19.2
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Simple Structures: Caves versions and loaders
1.2 for 1.21.1
Simple Structures Caves 1.21.1.jar
19 Aug 2026
Simple Structures Caves 1.21.1 1.0
Simple Structures Caves 1.21.1.jar
4 Mar 2026
Looking for an older file? The official CurseForge project page is in Resources.