Surface Sulfur Ring Swamp (Java 26.2)
A rare surface sulfur cave biome inside a mangrove swamp, surrounded by desert — cave spiders can spawn above ground here.

How to use this seed
Tested for Java Edition on version 26.2. Minor terrain differences can appear between patch releases.
- Open Minecraft Java Edition and choose Create New World.
- Click More World Options and paste the seed number below.
- Create the world, then use the coordinates on this page to find key locations.
3010093401612243309Sulfur ring visible within first render distanceIn-game shortcut: open chat and run /seed after loading to confirm the world seed matches. Preview this seed on the map
About this seed
Discovered by u/Shade28032006 and highlighted by PhoenixSC during the 26.2 snapshot cycle, this seed showcases Mojang's kept "surface sulfur cave" worldgen quirk. At spawn you get a circular valley where sulfur caves breach the surface inside mangrove swamp, wrapped by desert biomes — unlike normal underground sulfur caves marked only by small springs.
Community testing shows cave spiders spawning on the surface in this seed, which is extremely unusual. The layout is one of the clearest examples of low weirdness values creating surface sulfur biomes in Chaos Cubed.
Use Cubiomes or in-game exploration to map the full ring. Perfect for technical players, snapshot historians, and anyone building around the new sulfur blocks.
Coordinates
Sulfur ring visible within first render distanceStructures
Seed number
3010093401612243309Video showcase
Features
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The Mojang-confirmed example seed where sulfur caves generate on the surface — a full surface sulfur biome at spawn.
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Community-shared Java 26.2 snapshot seed with unusual terrain — submitted during the 26.2 snapshot 2 testing period.