Sulfur Caves

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The sulfur caves is a cave biome composed of sulfur and cinnabar blocks, where sulfur cubes and cave spiders spawn. Sulfur pools with potent sulfur generate here, as well as sulfur spikes.

Sulfur caves generate underground at the same depth as lush caves and dripstone caves, although they are much smaller in size and more fragmented. Sulfur springs sometimes generate at the surface, indicating there are sulfur caves below.

The biome generates only at low weirdness values (≤ -0.45), with additional requirements being medium continentalness and medium to high erosion. This means that they never generate directly under river valleys, but as small spots under hilltops. Sulfur caves do not generate under oceans and high mountains, although they can generate close. They are more common under flatland terrain near swamps and deserts.

Rarely, sulfur caves can generate above ground at weirdness values below -1.0. They can also leak out of cave openings or ravines.

The main landscape is composed of sulfur and cinnabar, layers in approximately same amount of blocks, with frequent sulfur pools possessing a unique acid-green color of water. Potent sulfur is found only on the bottom of these pools, creating noxious gas with white bubbles particles in and on top of the water. Nausea is inflicted to mobs and players when they come in contact with this noxious gas.

Sulfur spikes in varying patches and sizes generate on top of sulfur. Other terrain blocks such as deepslate and stone variants generate between the sulfur and cinnabar.

Ores rarely generate here, because sulfur and cinnabar replace most stone and deepslate blocks. The sky fog has a unique green color.

When a minecart with chest from a mineshaft spawns in sulfur caves, it has a chance to contain the "Bounce" music disc. In Bedrock Edition, woodland mansions can generate in sulfur caves, similar to other cave biomes, although this is nearly impossible.

With Vibrant Visuals, sulfur caves use warmish color grading, which tints the biome to look more humid and warm. They use a strong, dense volumetric fog; however, this is only visible on the surface with directional lighting.

The following mobs naturally spawn here:

{ "hasNotes": true, "notes": { "Slime": "Spawn attempt succeeds only in slime chunks." }, "1": { "totalWeight": 315, "mobs": [ { "size": "2-4", "mob": "Sulfur Cube", "weight": 100 }, { "size": "2", "mob": "Creeper", "weight": 50 }, { "size": "2", "mob": "Skeleton", "weight": 50 }, { "size": "2", "mob": "Zombie", "weight": 50 }, { "note": "Spawn attempt succeeds only in slime chunks.", "mob": "Slime", "weight": 25, "notename": "Slime", "size": "1" }, { "size": "1", "mob": "Cave Spider", "weight": 20 }, { "size": "1", "mob": "Enderman", "weight": 10 }, { "size": "1", "mob": "Witch", "weight": 5 }, { "size": "1", "mob": "Zombie Villager", "weight": 5 } ], "category": "monster" }, "2": { "totalWeight": 10, "mobs": [ { "size": "8", "mob": "Bat", "weight": 10 } ], "category": "ambient" } }

{ "hasNotes": true, "notes": { "Slime": "Spawn attempt succeeds only in slime chunks." }, "1": { "totalWeight": 436, "mobs": [ { "size": "2-4", "mob": "Sulfur Cube", "weight": 150 }, { "note": "Spawn attempt succeeds only in slime chunks.", "mob": "Slime", "weight": 100, "notename": "Slime", "size": "1" }, { "size": "2", "mob": "Zombie", "weight": 50.05 }, { "size": "2", "mob": "Creeper", "weight": 50 }, { "size": "2", "mob": "Skeleton", "weight": 50 }, { "size": "1", "mob": "Cave Spider", "weight": 20 }, { "size": "1-2", "mob": "Enderman", "weight": 10 }, { "size": "2", "mob": "Zombie Villager", "weight": 4.95 }, { "size": "1", "mob": "Witch", "weight": 1 } ], "category": "monster" }, "2": { "totalWeight": 10, "mobs": [ { "size": "2-4", "mob": "Glow Squid", "weight": 10 } ], "category": "creature" } }

These music tracks play while the player is in sulfur caves.

Java Edition:

Bedrock Edition:

Issues relating to "Sulfur Caves" are maintained on the bug tracker. Issues should be reported and viewed there.

• 👁 A canyon exposing sulfur caves
  
  A canyon exposing sulfur caves
• 👁 Mineshafts in sulfur caves, where the "Bounce" music disc can be found
  
  Mineshafts in sulfur caves, where the "Bounce" music disc can be found
• 👁 A thin sulfur carver cave
  
  A thin sulfur carver cave
• 👁 An aquifer in sulfur caves
  
  An aquifer in sulfur caves
• 👁 A monster room in sulfur caves
  
  A monster room in sulfur caves
• 👁 Floating mineshafts in a large sulfur cave
  
  Floating mineshafts in a large sulfur cave
• 👁 A sulfur pool inside a mineshaft
  
  A sulfur pool inside a mineshaft
• 👁 Surface sulfur caves in a desert, with some sulfur springs nearby
  
  Surface sulfur caves in a desert, with some sulfur springs nearby
• 👁 Sulfur caves on the surface in frozen biomes
  
  Sulfur caves on the surface in frozen biomes
• 👁 When sulfur caves generate at the surface, they commonly form deep lakes with sparse sulfur blocks.
  
  When sulfur caves generate at the surface, they commonly form deep lakes with sparse sulfur blocks.
• 👁 Sulfur caves together with lush caves and dripstone caves in one cave
  
  Sulfur caves together with lush caves and dripstone caves in one cave
• 👁 The dense volumetric fog in sulfur caves with Vibrant Visuals
  
  The dense volumetric fog in sulfur caves with Vibrant Visuals
• 👁 The green classic fog in sulfur caves
  
  The green classic fog in sulfur caves
• 👁 A sulfur caves single biome world
  
  A sulfur caves single biome world

• 👁 A sulfur cave generating with cave features on the surface
  
  A sulfur cave generating with cave features on the surface

• 👁 Water flowing into deepslate levels from sulfur caves
  
  Water flowing into deepslate levels from sulfur caves
• 👁 A house in sulfur caves, built with the sulfur and cinnabar block variations
  
  A house in sulfur caves, built with the sulfur and cinnabar block variations
• 👁 A pool of gas created by potent sulfur
  
  A pool of gas created by potent sulfur
• 👁 Sulfur cubes in a sulfur cave's entrance
  
  Sulfur cubes in a sulfur cave's entrance
• 👁 Kai using a log on a sulfur cube in sulfur caves
  
  Kai using a log on a sulfur cube in sulfur caves