Sulfur Caves Backport Mod Wiki & Guide

Sulfur Caves generate in the deep underground, typically below Y-level 0, so you'll need to dig well below sea level to encounter them. The exact depth varies based on your world's terrain, but exploring deep cave systems is your best bet for finding these biomes.

Sulfur Caves themselves are underground biomes, but the mod generates rare cave entrances on mountain surfaces that lead down into sulfur cavern systems. These entrances are natural openings you can spot while exploring mountainous terrain.

Sulfur blocks are bright yellow mineral blocks that form the primary cave structure, while cinnabar is a deep red ore that generates alongside sulfur. Both can be mined and crafted into decorative variants like stairs, slabs, walls, and polished blocks.

The mod doesn't require special tools beyond what you'd normally use for stone-tier mining, so a standard stone pickaxe or better will work for harvesting these blocks.