seedlookoutNETHER · NETHER STRUCTURES
Bastion Remnant
Page updated
Blackstone ruins held by piglins and piglin brutes, in four layouts with different routes and treasure. Players raid them for netherite upgrade templates, gold, and the Pigstep music disc.
This guide follows vanilla Java 26.3. Historical changes retain their own edition and version. Bedrock generation and loot can differ. Screenshots and verified seeds below retain their own game versions.
28462718234064871 · Java 26.3 · netherReference capture · Naturally generated structure, photographed in Minecraft Java 26.3.Game data and source research
Where it generates in Java 26.3
Eligible starting biomes are Nether Wastes, Soul Sand Valley, Crimson Forest and Warped Forest. Basalt Deltas are absent from the bastion tag. [2][5]
Candidate positions and rarity
Java 26.3 selects one potential starting chunk per 27×27-chunk region (432 blocks on each side). Candidate selection happens before successful structure generation; this is not a measured density or an average travel distance. [3][4]
Bastions and fortresses share one candidate in each 27×27-chunk region. Their initial selection weights are 3 and 2, respectively. If the selected structure fails, the generator retries the remaining entry, so 60% is an initial choice weight rather than a universal observed bastion frequency. [1][3][4][5]
What the starting position means
The bastion start pool is bastion/starts at configured Y=33. Jigsaw placement positions and expands that start; Y=33 is not a requirement that every room or walkway sit at the same height. [1][4][5]
Four bastion layouts
The start pool selects between housing units, hoglin stables, a treasure layout and a bridge layout. Each expands through its own pool of blackstone pieces. Broken walls and open drops are part of the templates, so an apparent gap is not reliable evidence of a hidden passage. [6]
| Part | What to look for |
|---|---|
| Housing units | Layered residential pieces built around a central space. [6] |
| Hoglin stables | Stable pieces and connecting stairs; look for separate levels rather than a single room. [6] |
| Treasure room | A large lava basin and surrounding galleries, with a magma-cube spawner in the basin template. [6] |
| Bridge | A substantial bridge entrance with connecting ramparts and rooms. [6] |
Brutes and the treasure-room spawner
Piglin, piglin-brute and hoglin entity templates are inserted as part of generation. Counting these small entity templates does not give the number of residents in a bastion: a layout can use pieces repeatedly or omit them. The bastion has no special natural-spawn override to refill cleared brute positions. [6]
Gold armor does not make a piglin brute safe. Its target-selection path can choose a nearby player without the normal piglin armor check. Keep a retreat route when entering upper galleries or narrow stairways. [7]
The treasure/bases/lava_basin template contains a magma-cube spawner. That block can produce further mobs while its spawning conditions are met; it is a different source from residents placed during construction. [6][7]
Loot and rewards in Java 26.3
Bastions have four distinct chest loot tables. Treasure-table chests are the strongest direct source here of netherite ingots and the upgrade template; bridge, hoglin-stable and other chests have different selections. A bastion does not give every chest the treasure table. [8]
Every invocation of the treasure table includes one Netherite Upgrade Smithing Template. The other three tables each make a separate one-in-ten upgrade-template draw. All four tables separately choose a Snout trim template against eleven units of empty weight; an upgrade template and a Snout template are separate outcomes and can occur together. [8]
The bridge table guarantees a lodestone before its other selections. Pigstep belongs to the other-chest table, where its weight 5 sits in a single-roll pool totaling 89. It is not an item in all four bastion chest tables. [8]
Treasure-table gear now includes diamond spears. Its main pool also has separate ancient-debris entries supplying one or two blocks. Summing their weights establishes selection probability, but it does not make every successful debris selection the same stack size. [8]
Compared directly with Java 1.20.1, the Java 26.3 tables differ. The inspected bastion treasure table gains Diamond spear; its first pool changes from total weight 100 to 112. The inspected bastion other table gains Iron chain and no longer lists Chain. Use the current weights rather than carrying older chest percentages forward. [8][10]
| Item | Where the rule applies | What the data establishes |
|---|---|---|
 Netherite upgrade template | One treasure-table chest | Guaranteed: one dedicated pool, one upgrade template. [8][9] |
| Netherite upgrade template | One bridge/other/hoglin-stable chest | 10.0% in each of these three table-specific draws. [8] |
 Snout armor trim template | One chest using any of the four bastion tables | 8.3% chance, from weight 1 against empty 11. [8][9] |
 Netherite ingot | One treasure-table chest | 35.0% chance of at least one ingot selection over three rolls. [8][9] |
 Enchanted golden apple | One treasure-table chest | 5.3% chance of at least one apple selection over three rolls. [8][9] |
 Music disc Pigstep | One other-table chest | 5.6% chance: one draw, weight 5/89. [8][9] |
Version history and release dates
These milestones retain their edition and exact build labels. Snapshot, beta and preview dates belong to those development builds; full releases and staggered Pocket platform releases are dated separately. Historical introduction claims come from the cited Wiki history. [11]
| Version | Released | What changed |
|---|---|---|
| Java 1.16 | June 23, 2020 | Bastion remnants were introduced. [11][13] |
| Bedrock 1.16.0 | June 23, 2020 | Bastion remnants were introduced. [11][14] |
| Java 1.16.2 | August 11, 2020 | Piglin brutes were added to bastions, and chest loot was rebalanced. [11][15] |
| Bedrock 1.16.20 | August 11, 2020 | Piglin brutes were added to bastions. [11][16] |
| Bedrock 1.17.10 | July 13, 2021 | Chest loot was adjusted toward larger quantities of valuable items. [11][17] |
| Java 1.18.2 | February 28, 2022 | Basalt-delta bastion attempts began producing a fortress instead. [11][18] |
| Java 1.19.4 (Update 1.20 experiment) | March 14, 2023 | Netherite upgrades and snout armor trims entered bastion chest loot in the Update 1.20 experiment. [11][19] |
| Java 1.21.11 | December 9, 2025 | Diamond spears were added to bastion chest loot. [11][20] |
SeedLookout in-game verification
Screenshots
28462718234064871 · Java 26.3 · netherReference capture · Naturally generated structure, photographed in Minecraft Java 26.3.Our screenshots of naturally generated structures in Minecraft. Each caption gives the seed, coordinates and version. Select one to open it at full size.
Seeds with this bastion remnant
None of our verified seeds includes this structure yet. The guide cites game data, code analysis and other references; it does not verify a seed.
Sources
References identify the edition, version and evidence behind the guide. Game code and data describe generation rules; the seed table records locations checked in game. Research reviewed 2026-10-02.
- Mojang Java 26.3: structure configuration ↗
Inner archive META-INF/versions/26.3/server-26.3.jar: data/minecraft/worldgen/structure/bastion_remnant.json
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. SHA-256 by archive member: data/minecraft/worldgen/structure/bastion_remnant.json = a34d39deac28c25ac6c1a34a9cfc840af72aeeba4bec6b6c851361592909bc34
- Mojang Java 26.3: resolved starting-biome tags ↗
Inner archive META-INF/versions/26.3/server-26.3.jar: data/minecraft/tags/worldgen/biome/has_structure/bastion_remnant.json
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. SHA-256 by archive member: data/minecraft/tags/worldgen/biome/has_structure/bastion_remnant.json = 862effc2d174ddc9293d4a88e1e970387a25cb0c9b2c4ebb423018087a011a69
- Mojang Java 26.3: candidate placement settings ↗
Inner archive META-INF/versions/26.3/server-26.3.jar: data/minecraft/worldgen/structure_set/nether_complexes.json
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. SHA-256 by archive member: data/minecraft/worldgen/structure_set/nether_complexes.json = f768903738bcecc5f5114be3635ea7b8e267b3e887435e6b8eccfcbe80bc821d
- Mojang Java 26.3: candidate filtering and weighted retries ↗
Inner archive META-INF/versions/26.3/server-26.3.jar: net/minecraft/world/level/chunk/ChunkGenerator.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$ExclusionZone.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReducer.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReductionMethod.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement.class; net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.class. Methods: RandomSpreadStructurePlacement.getPotentialStructureChunk; AbstractSpreadingStructurePlacement.isStructureChunk; ChunkGenerator.createStructures / tryGenerateStructure
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. Implementation inspected using CFR 0.152; reconstructed Java is not an original Mojang source publication. SHA-256 by archive member: net/minecraft/world/level/chunk/ChunkGenerator.class = 7e5145ec6e36cbc7af979e869d4947c85e4715b8d13105f1369f0a385c40851d; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$ExclusionZone.class = eb0d49eb1ffb0714fbdb04abde954fbdbd50cfeafd411f593de8159a06488300; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReducer.class = e2887ebf5f8937ca3b038d6e1c40bc1c77f983a97b5b7ed9bdcd78b59d103e82; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReductionMethod.class = 3664480026b9e91c8235bdbf6d98fdbbb78586f8d0decee70f9ea788d3291a71; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement.class = 0775a5cd47242fafd7f9977a9cfb821a6fffe5d1defcbc3bf8cded7e2427a4a8; net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.class = 8fbeed7711f96285b9b39b2e8363ffaa6ea80dd03baea4c1e6fa98e90b7f8eb9
- Mojang Java 26.3: generation entry points ↗
Inner archive META-INF/versions/26.3/server-26.3.jar: net/minecraft/world/level/levelgen/structure/Structure$GenerationContext.class; net/minecraft/world/level/levelgen/structure/Structure$GenerationStub.class; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings$Builder.class; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings.class; net/minecraft/world/level/levelgen/structure/Structure.class; net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement$PieceState.class; net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement$Placer.class; net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement.class; net/minecraft/world/level/levelgen/structure/structures/JigsawStructure$1.class; net/minecraft/world/level/levelgen/structure/structures/JigsawStructure$MaxDistance.class; net/minecraft/world/level/levelgen/structure/structures/JigsawStructure.class. Methods: JigsawStructure.findGenerationPoint; Structure.findValidGenerationPoint; Structure.GenerationContext.isValidBiome; JigsawPlacement.addPieces
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. Implementation inspected using CFR 0.152; reconstructed Java is not an original Mojang source publication. SHA-256 by archive member: net/minecraft/world/level/levelgen/structure/Structure$GenerationContext.class = 0c4335baa022b0482299b5cc0a3d0492fd3160542640b2538a5b8934822cc12b; net/minecraft/world/level/levelgen/structure/Structure$GenerationStub.class = e7a25f7418cfbfafaa6ecc1558a4bacde160ab247be6997df4aef3288da76a52; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings$Builder.class = e9b9a37f14f156749ceb686ab31f34954c3b65c0e9f1ff43cdebb508a72b1261; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings.class = 5796d330ef7ea491ee64b34ccdfe6c08a62b71886441bd87cd327a2fc6188f80; net/minecraft/world/level/levelgen/structure/Structure.class = fa023ce735376b7042242948275a0869a7e22d30e5e4c5c6502b521578577188; net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement$PieceState.class = 3566ead77b6d528b2c451409a51fea25598ea9c27c02e6832348d5df446b329c; net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement$Placer.class = 29c8637ca117a33199db02f06b206c60b1b3947adf029654b3d1bd524eba4400; net/minecraft/world/level/levelgen/structure/pools/JigsawPlacement.class = 18b1d2ca2de608f60a30c8547315e0c5845047e5a1789d711d815ad6bbdc7da4; net/minecraft/world/level/levelgen/structure/structures/JigsawStructure$1.class = 8e8bc7f3527f38fcf408bb69496ff63f69f71c558c41c80a3d419d135327f96e; net/minecraft/world/level/levelgen/structure/structures/JigsawStructure$MaxDistance.class = ed76252263c711231b316b1cff170bfe048e008bf46af2cb75985d30ba7e9fc5; net/minecraft/world/level/levelgen/structure/structures/JigsawStructure.class = a8576ddbc0cf99b1e220ead439ce3f9aa373cd38400b77aa86273a5c3740598b
- Mojang Java 26.3: bastion remnant templates and data ↗
data/minecraft/worldgen/structure/bastion_remnant.json; data/minecraft/structure/bastion/**/*.nbt; data/minecraft/worldgen/template_pool/bastion/**/*.json; data/minecraft/worldgen/processor_list/bastion_generic_degradation.json
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c; inner META-INF/versions/26.3/server-26.3.jar SHA-256 a362163eec5d1612d520772bc16e5b39c09e3b234fdc045f56bf544284ee8ae6. NBT dimensions are unrotated saved template bounds (X × Y × Z), including air and connectors, not usable interior dimensions.
- Mojang Java 26.3: bastion remnant layout and encounter implementation ↗
net.minecraft.world.entity.monster.piglin.PiglinBrute; net.minecraft.world.entity.monster.piglin.PiglinAi; net.minecraft.world.entity.monster.piglin.PiglinBruteAi; net.minecraft.world.level.BaseSpawner; data/minecraft/worldgen/template_pool/bastion/starts.json; bastion/treasure/bases/lava_basin.nbt; bastion/mobs/; PiglinBruteAi.findNearestValidAttackTarget; PiglinAi.isWearingSafeArmor; BaseSpawner.serverTick / delay.
Evidence details
Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c; inner META-INF/versions/26.3/server-26.3.jar SHA-256 a362163eec5d1612d520772bc16e5b39c09e3b234fdc045f56bf544284ee8ae6. Official bytecode inspected through CFR 0.152; reconstructed implementation, not an original source checkout.
- Mojang Java 26.3: bastion remnant loot data ↗
Inner META-INF/versions/26.3/server-26.3.jar: data/minecraft/loot_table/chests/bastion_treasure.json; data/minecraft/loot_table/chests/bastion_bridge.json; data/minecraft/loot_table/chests/bastion_other.json; data/minecraft/loot_table/chests/bastion_hoglin_stable.json
Evidence details
Verified official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. File SHA-256s: bastion_treasure.json: 6a6901cd318913dab5bf9d07853a9bb654b99f4223dc42907d20469883e60149; bastion_bridge.json: 7a61ef1d4628bce8d024904cb9e49e4ae7b74c98d8044e6b8d65cc7bb2ba817f; bastion_other.json: 38afd4ad6cd682b0df39c16cb6ab7881d50c770a85be65c2e1f982a85db3d030; bastion_hoglin_stable.json: 4296433659481f19ac182678159fe69791580e2fce2bb2302dfc3d7908daeba0. Table identity and conditional item rules are distinct from any particular generated container.
- Java 26.3 bastion remnant: calculated selection odds ↗
Relevant /pools indices in the data reference; LootPool.addRandomItem/addRandomItems; UniformContainerBase.uniformFields; UniformGenerator.getIntUnsafe.
Evidence details
For direct unconditional weighted pools, chance of at least one selection is 1 minus the average of (1−weight/totalWeight)^n over inclusive uniform integer rolls. Values are theoretical table-invocation probabilities, not seed frequencies. Exact inputs: [{"itemId":"minecraft:netherite_upgrade_smithing_template","table":"data/minecraft/loot_table/chests/bastion_treasure.json","pool":3,"chance":1.0,"fraction":"1","weight":1,"total":1,"rolls":[1]},{"itemId":"minecraft:snout_armor_trim_smithing_template","table":"data/minecraft/loot_table/chests/bastion_treasure.json","pool":2,"chance":0.08333333333333333,"fraction":"1/12","weight":1,"total":12,"rolls":[1]},{"itemId":"minecraft:netherite_ingot","table":"data/minecraft/loot_table/chests/bastion_treasure.json","pool":0,"chance":0.35037738588739065,"fraction":"492255/1404928","weight":15,"total":112,"rolls":[3]},{"itemId":"minecraft:enchanted_golden_apple","table":"data/minecraft/loot_table/chests/bastion_treasure.json","pool":0,"chance":0.05262049016034986,"fraction":"9241/175616","weight":2,"total":112,"rolls":[3]},{"itemId":"minecraft:music_disc_pigstep","table":"data/minecraft/loot_table/chests/bastion_other.json","pool":0,"chance":0.056179775280898875,"fraction":"5/89","weight":5,"total":89,"rolls":[1]}]
- Mojang Java 1.20.1: inspected historical bastion remnant loot ↗
data/minecraft/loot_tables/chests/bastion_treasure.json; data/minecraft/loot_tables/chests/bastion_other.json
Evidence details
Limited comparison of the listed data files; no claim that all intermediate releases share either table. SHA-256s: bastion_treasure.json: 479f2e6bcb5336836ad4ce3c4877dc8912c71c1eb7f354b72d995a3fda02b548; bastion_other.json: d69f2641e6f880ac76a2c9d3576eef12d503fdb5e016e5b2b08547656518d282
- Minecraft Wiki: Bastion Remnant — pinned history ↗
History section, retaining edition, release grouping, development-version and experimental-toggle qualifiers.
Evidence details
Pinned article revision 3787534 from 2026-09-21T15:07:43Z. Historical claims only; not an audited game build or release-date source.
- Minecraft Wiki: Bastion Remnant description ↗
Opening description and History
Evidence details
Pinned article revision 3787534; retrieved October 1, 2026. Article history supports historical introductions; current generation and loot are audited separately from game data.
- Java 1.16: release date ↗
/id; /releaseTime
Evidence details
Release metadata establishes its date, not feature introduction. Original Wiki history must support introduction separately.
- Bedrock 1.16.0: release date ↗
Version infobox release date
Evidence details
Platform releases were staggered: June 23, 2020<ref name="nether-release">{{cite|url=https://feedback.minecraft.net/hc/en-us/articles/360044928311|title=Minecraft - Nether Update - 1.16.0 (Bedrock)|date=June 23, 2020}}</ref>. These dates describe full Pocket releases, separately from earlier betas.
- Java 1.16.2: release date ↗
/id; /releaseTime
Evidence details
Date belongs to the exact 1.16.2 build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.
- Bedrock 1.16.20: release date ↗
Version infobox release date
Evidence details
Pinned community version article date; snapshots, betas and previews have their own release dates, separately from the full version.
- Bedrock 1.17.10: release date ↗
Version infobox release date
Evidence details
Pinned community version article date; snapshots, betas and previews have their own release dates, separately from the full version.
- Java 1.18.2: release date ↗
/id; /releaseTime
Evidence details
Date belongs to the exact 1.18.2 build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.
- Java 1.19.4 (Update 1.20 experiment): release date ↗
/id; /releaseTime
Evidence details
Full 1.19.4 release date; Update 1.20 experimental features required their separate toggle. Feature introduction is independently sourced to the structure history.
- Java 1.21.11: release date ↗
/id; /releaseTime
Evidence details
Date belongs to the exact 1.21.11 build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.
Item art uses vanilla Java 26.3 assets from the official client release. Icons retain their game version alongside the guide.
Descriptions adapted from the Minecraft Wiki retain its attribution under CC BY-NC-SA 3.0. Calculations and code analysis are SeedLookout research. Screenshot captions identify each capture. The seed table contains our published verified seeds; checking a location does not establish particular room contents or chest loot.