Bastion Remnant

See also: Tutorials/Defeating a bastion remnant
For the hunt room containing gold chests in Minecraft Dungeons, see MCD:Bastion Remnant.

## Bastion Remnant

* Treasure room
* Bridge
* Housing units
* Hoglin stables

### Biomes

Nether Wastes
 Soul Sand Valley
 Crimson Forest
 Warped Forest

## Consists of

**Bastion remnants** are large, castle-like generated structures found in the Nether in all of the biomes except basalt deltas. They generate in four distinct variants, each with a unique structure and set of loot. Piglins and piglin brutes spawn in these structures on generation, and hoglins may also spawn on generation in the bridge and hoglin stables variants. Bastion remnants are the only place to find gilded blackstone, the Pigstep music disc, the snout banner pattern and armor trim, the magma cube monster spawner, and the netherite upgrade smithing template.

## Generation

Bastion remnants generate in all Nether biomes except basalt deltas, although a bastion may extend into one. If a bastion tries to generate in a basalt delta, the bastion does not generate, leaving the region empty. To generate the structure, the game splits the Nether into regions, in which either a nether fortress or a bastion remnant can generate. The regions are 432×432 blocks in *Java Edition* and 480×480 blocks in *Bedrock Edition*. Each region has a 4-chunk separation located on the south and east borders of the region in which neither a fortress nor a bastion can generate. This leaves only a 368×368 block section in *Java Edition* or 416×416 block section in *Bedrock Edition* where a structure can generate. Two structures never generate in the same region, although they might overlap if they generate close to the separation border. In *Java Edition*, the chance of a bastion generating instead of a fortress is 3⁄5 (60%), while in *Bedrock Edition* the chance of a bastion generating instead of a fortress is 2⁄3 (66.6%).

Piglins, piglin brutes, and hoglins that spawn upon generation in bastion remnants neither despawn naturally nor do they hunt each other. Piglin brutes also spawn exclusively here upon structure generation, and do not despawn unless killed, or if difficulty is set to Peaceful in *Java Edition* (they remain in *Bedrock Edition* but become passive in Peaceful difficulty). Like shulkers in end cities, once these mobs are killed, they do not respawn, though the bastion continues to spawn normal mobs depending on the biome it is located in.

## Structure

Main article: Bastion Remnant/Structure
Bastion remnants generate as 4 types of structures: bridges, hoglin stables, housing units, and treasure rooms. Each type has its own set of structures that compose it. These structures may be supported by ramparts that contain cave-like paths. Piglins, piglin brutes, and hoglins spawn frequently throughout. Unlike nether fortresses, when over the lava ocean, they do not generate pillars of solid blocks down to the solid terrain beneath, but float above, entirely even.

All bastion remnant structures found below are located in the folder `client.jar/data/minecraft/structures/bastion`.

### File structure

* bastion
	+ blocks
		- air.nbt
		- gold.nbt
	+ bridge
		- bridge\_pieces
			* bridge.nbt
		- connectors
			* back\_bridge\_bottom.nbt
			* back\_bridge\_top.nbt
		- legs
			* leg\_0.nbt
			* leg\_1.nbt
		- ramparts
			* rampart\_0.nbt
			* rampart\_1.nbt
		- rampart\_plates
			* plate\_0.nbt
		- starting\_pieces
			* entrance.nbt
			* entrance\_base.nbt
			* entrance\_face.nbt
		- walls
			* wall\_base\_0.nbt
			* wall\_base\_1.nbt
	+ hoglin\_stable
		- air\_base.nbt
		- connectors
			* end\_post\_connector.nbt
		- large\_stables
			* inner\_0.nbt
			* inner\_1.nbt
			* inner\_2.nbt
			* inner\_3.nbt
			* inner\_4.nbt
			* outer\_0.nbt
			* outer\_1.nbt
			* outer\_2.nbt
			* outer\_3.nbt
			* outer\_4.nbt
		- posts
			* end\_post.nbt
			* stair\_post.nbt
		- ramparts
			* ramparts\_1.nbt
			* ramparts\_2.nbt
			* ramparts\_3.nbt
		- rampart\_plates
			* rampart\_plate\_1.nbt
		- small\_stables
			* inner\_0.nbt
			* inner\_1.nbt
			* inner\_2.nbt
			* inner\_3.nbt
			* outer\_0.nbt
			* outer\_1.nbt
			* outer\_2.nbt
			* outer\_3.nbt
		- stairs
			* stairs\_0\_mirrored.nbt
			* stairs\_1\_0.nbt
			* stairs\_1\_1.nbt
			* stairs\_1\_2.nbt
			* stairs\_1\_3.nbt
			* stairs\_1\_4.nbt
			* stairs\_2.nbt
			* stairs\_2\_0.nbt
			* stairs\_2\_1.nbt
			* stairs\_2\_2.nbt
			* stairs\_2\_3.nbt
			* stairs\_2\_4.nbt
			* stairs\_3.nbt
			* stairs\_3\_0.nbt
			* stairs\_3\_1.nbt
			* stairs\_3\_2.nbt
			* stairs\_3\_3.nbt
			* stairs\_3\_4.nbt
		- starting\_pieces
			* stairs\_0\_mirrored.nbt
			* stairs\_1\_mirrored.nbt
			* stairs\_2\_mirrored.nbt
			* stairs\_3\_mirrored.nbt
			* stairs\_4\_mirrored.nbt
			* starting\_stairs\_0.nbt
			* starting\_stairs\_1.nbt
			* starting\_stairs\_2.nbt
			* starting\_stairs\_3.nbt
			* starting\_stairs\_4.nbt
		- walls
			* side\_wall\_0.nbt
			* side\_wall\_1.nbt
			* wall\_base.nbt
	+ mobs
		- empty.nbt
		- crossbow\_piglin.nbt‌[*JE only*]
		- hoglin.nbt‌[*JE only*]
		- melee\_piglin.nbt‌[*JE only*]
		- melee\_piglin\_always.nbt‌[*JE only*]
		- sword\_piglin.nbt‌[*JE only*]
		- melee\_piglin.mcstructure‌[*BE only*]
		- melee\_piglin\_always.mcstructure‌[*BE only*]
		- crossbow\_piglin.mcstructure‌[*BE only*]
		- hoglin.mcstructure‌[*BE only*]
		- sword\_piglin.mcstructure‌[*BE only*]
	+ treasure
		- big\_air\_full.nbt
		- bases
			* lava\_basin.nbt
			* centers
				+ center\_0.nbt
				+ center\_1.nbt
				+ center\_2.nbt
				+ center\_3.nbt
		- brains
			* center\_brain.nbt
		- connectors
			* center\_to\_wall\_middle.nbt
			* center\_to\_wall\_top.nbt
			* center\_to\_wall\_top\_entrance.nbt
		- corners
			* bottom
				+ corner\_0.nbt
				+ corner\_1.nbt
			* edges
				+ bottom.nbt
				+ middle.nbt
				+ top.nbt
			* middle
				+ corner\_0.nbt
				+ corner\_1.nbt
			* top
				+ corner\_0.nbt
				+ corner\_1.nbt
		- entrances
			* entrance\_0.nbt
		- extensions
			* empty.nbt
			* fire\_room.nbt
			* house\_0.nbt
			* house\_1.nbt
			* large\_bridge\_0.nbt
			* large\_bridge\_1.nbt
			* large\_bridge\_2.nbt
			* large\_bridge\_3.nbt
			* roofed\_bridge.nbt
			* small\_bridge\_0.nbt
			* small\_bridge\_1.nbt
			* small\_bridge\_2.nbt
			* small\_bridge\_3.nbt
		- ramparts
			* bottom\_wall\_0.nbt
			* lava\_basin.nbt‌[*BE only*]
			* lava\_basin\_main.nbt
			* lava\_basin\_side.nbt
			* mid\_wall\_main.nbt
			* mid\_wall\_side.nbt
			* top\_wall.nbt
		- roofs
			* center\_roof.nbt
			* corner\_roof.nbt
			* wall\_roof.nbt
		- stairs
			* lower\_stairs.nbt
		- walls
			* entrance\_wall.nbt
			* lava\_wall.nbt
			* bottom
				+ wall\_0.nbt
				+ wall\_1.nbt
				+ wall\_2.nbt
				+ wall\_3.nbt
			* mid
				+ wall\_0.nbt
				+ wall\_1.nbt
				+ wall\_2.nbt
			* outer
				+ bottom\_corner.nbt
				+ medium\_outer\_wall.nbt
				+ mid\_corner.nbt
				+ outer\_wall.nbt
				+ tall\_outer\_wall.nbt
				+ top\_corner.nbt
			* top
				+ main\_entrance.nbt
				+ wall\_0.nbt
				+ wall\_1.nbt
	+ units
		- air\_base.nbt
		- center\_pieces
			* center\_0.nbt
			* center\_1.nbt
			* center\_2.nbt
		- edges
			* edge\_0.nbt
		- fillers
			* stage\_0.nbt
		- pathways
			* pathway\_0.nbt
			* pathway\_wall\_0.nbt
		- ramparts
			* ramparts\_0.nbt
			* ramparts\_1.nbt
			* ramparts\_2.nbt
		- rampart\_plates
			* plate\_0.nbt
		- stages
			* stage\_0\_0.nbt
			* stage\_0\_1.nbt
			* stage\_0\_2.nbt
			* stage\_0\_3.nbt
			* stage\_1\_0.nbt
			* stage\_1\_1.nbt
			* stage\_1\_2.nbt
			* stage\_1\_3.nbt
			* stage\_2\_0.nbt
			* stage\_2\_1.nbt
			* stage\_3\_0.nbt
			* stage\_3\_1.nbt
			* stage\_3\_2.nbt
			* stage\_3\_3.nbt
			* rot
				+ stage\_1\_0.nbt
		- walls
			* connected\_wall.nbt
			* wall\_base.nbt
		- wall\_units
			* edge\_0.nbt‌[*BE only*]
			* edge\_0\_large.nbt
			* unit\_0.nbt

### Bridge

The **bridge** consists of a large ruined rampart structure with a piglin face carved into it. The inside of the "mouth" consists of multiple levels of walkways surrounded by lava. A damaged bridge goes out from the mouth, with a support pillar on the far side.

### Hoglin stables

The **hoglin stables** consist of a three-part rampart with damaged hoglin stables on either side. Hoglin stables' pieces are contained in the subfolder `hoglin\_stable`. They contain the hoglin stable chests.

### Housing units

The **housing unit** consists of multiple ruined two-part ramparts arranged around a central courtyard with nether wart growing in the middle. Housing unit pieces are contained in the subfolder `units`.

### Treasure room

The **treasure room** structure consists of a large rampart supported by buttresses, with a bridge going between it and the treasure room itself. The rampart contains several treasure chests and a handful of blocks of gold.

The treasure room consists of many bridges suspended above a lava floor. At the bottom of a treasure room, there is a magma cube monster spawner, and a center loot area consisting of blocks of gold, as well as 1 or 2 treasure chests. Additional chests generate in the bastion, but they use the "generic" loot table instead of the "treasure" loot table. Treasure room pieces are contained in the subfolder `treasure`.

### Blocks

1. ↑ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an There is a 10% chance of spawning a piglin brute, a 40% chance of spawning a piglin with a golden sword, a 40% of spawning a piglin with a crossbow, and a 10% chance of not spawning at all.
2. ↑ a b c d e f g h i j k l m n o p There is a 5⁄6 chance of spawning a piglin brute and a 1⁄6 chance of spawning a piglin with a golden sword.
3. ↑ a b c d e f g h i j k This hoglin has a 1⁄3 chance of not spawning.
4. ↑ a b c d e f g h i j This gold block has only a 25% chance of appearing. Otherwise, air is generated in its place.

### Bridge

This loot appears in some structures in bridge bastion remnants.

In *Java Edition*, each bastion bridge chest contains items drawn from 5 pools, with the following distribution:

In *Bedrock Edition*, each bastion bridge chest contains items drawn from 5 pools, with the following distribution:

1. ↑ a b The size of stacks (or for unstackable items, number) of this item on any given roll.
2. ↑ a b The weight of this item relative to other items in the pool.
3. ↑ a b The odds of finding any of this item in a single chest.
4. ↑ a b The number of items expected per chest, averaged over a large number of chests.
5. ↑ a b The average number of chests the player should expect to search to find any of this item.
6. ↑ a b 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot *on a single roll*.
7. ↑ a b c d e f g h i j k l All enchantments are equally probable, *including* treasure enchantments (except Soul Speed, and Swift Sneak), and any level of the enchantment is equally probable.
8. ↑ a b The item has between 10% and 50% of its total durability.

### Generic

This loot appears in chests throughout all types of bastion remnants.

In *Java Edition*, each bastion generic chest contains items drawn from 5 pools, with the following distribution:

In *Bedrock Edition*, each bastion generic chest contains items drawn from 5 pools, with the following distribution:

1. ↑ a b The size of stacks (or for unstackable items, number) of this item on any given roll.
2. ↑ a b The weight of this item relative to other items in the pool.
3. ↑ a b The odds of finding any of this item in a single chest.
4. ↑ a b The number of items expected per chest, averaged over a large number of chests.
5. ↑ a b The average number of chests the player should expect to search to find any of this item.
6. ↑ a b 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot *on a single roll*.
7. ↑ a b c d e f g h All enchantments are equally probable, *including* treasure enchantments (except Soul Speed, and Swift Sneak), and any level of the enchantment is equally probable.
8. ↑ a b c d The item has between 10% and 90% of its total durability.
9. ↑ a b c d Enchanted with a random level of Soul Speed.

### Hoglin Stable

This loot appears in some structures in hoglin stable bastion remnants.

In *Java Edition*, each bastion hoglin stable chest contains items drawn from 4 pools, with the following distribution:

In *Bedrock Edition*, each bastion hoglin stable chest contains items drawn from 4 pools, with the following distribution:

1. ↑ a b The size of stacks (or for unstackable items, number) of this item on any given roll.
2. ↑ a b The weight of this item relative to other items in the pool.
3. ↑ a b The odds of finding any of this item in a single chest.
4. ↑ a b The number of items expected per chest, averaged over a large number of chests.
5. ↑ a b The average number of chests the player should expect to search to find any of this item.
6. ↑ a b 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot *on a single roll*.
7. ↑ a b c d e f All enchantments are equally probable, *including* treasure enchantments (except Soul Speed, and Swift Sneak), and any level of the enchantment is equally probable.
8. ↑ a b The item has between 15% and 80% of its total durability.
9. ↑ a b The item has between 15% and 95% of its total durability.

### Treasure

This loot appears in some structures in treasure bastion remnants.

In *Java Edition*, each bastion treasure chest contains items drawn from 4 pools, with the following distribution:

In *Bedrock Edition*, each bastion treasure chest contains items drawn from 4 pools, with the following distribution:

1. ↑ a b The size of stacks (or for unstackable items, number) of this item on any given roll.
2. ↑ a b The weight of this item relative to other items in the pool.
3. ↑ a b The odds of finding any of this item in a single chest.
4. ↑ a b The number of items expected per chest, averaged over a large number of chests.
5. ↑ a b The average number of chests the player should expect to search to find any of this item.
6. ↑ a b 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot *on a single roll*.
7. ↑ a b c d e f g h i j All enchantments are equally probable, *including* treasure enchantments (except Soul Speed, and Swift Sneak), and any level of the enchantment is equally probable.
8. ↑ a b c d e f g h i j The item has between 80% and 100% of its total durability.

## Issues

Issues relating to "Bastion Remnant" are maintained on the bug tracker. Report issues there.

## Trivia

* The structure `bastion/hoglin_stable/starting_pieces/stairs_1_mirrored`, despite containing the word "mirrored", it is not stored as mirrored like the other mirrored stairs. This has no effect on generation due to the placement of jigsaw blocks in the structure.
* In *Bedrock Edition*, there are multiple unused structure files. Unlike the unused structures in *Java Edition*, these structures are more technical.
	+ Two files named `bastion/units/wall_units/edge_0`, and `bastion/treasure/ramparts/lava_basin` contain blocks that have not been added to the game, including `blackstone_bricks`, `blackstone_brick_stairs`, `cracked_blackstone_bricks`, and `chiseled_blackstone_bricks`.
	+ A test structure file, `bastion/jigsaw_test`, contains two oak signs, some jigsaw blocks, stained glass, and stone.
* Buried sections can exist within the bastion and alongside it. Ore may generate alongside or within netherrack, but glowstone blobs can do so within its air.
* Ghasts can spawn in the treasure room if the room is in the correct biome, leading to a surprising ramp-up in difficulty.

## Gallery

* A previously buried bastion remnant that has been exposed.
* Exterior of a treasure room bastion remnant.
* A bridge bastion remnant.
* A stable generating partway through a basalt delta biome.
* A housing unit bastion remnant in a soul sand valley biome, right as the player exits the nether portal.
* A housing unit bastion remnant almost completely encased in netherrack.
* An example of the items that can be found in bastion remnant chests.
* Another example of the items that can be found in bastion remnant chests.
* Piglin in a bastion.
* Piglin brute in a bastion.
* A bastion generated surrounded by lava.
* A bastion in a soul sand valley.
* A bastion in a soul sand valley.
* Hoglin in a bastion.
* Walls within a bastion.

## References

1. ↑ MC-179796 — "Bastion remnants have no foundation" — resolved as "Works As Intended".
2. ↑ MC-178797