Trial Chambers

generated

Trial Chambers is a generated structure in Minecraft. It is home to Zombie, Husk, Skeleton, Stray, and Bogged.

Trial Chambers are rare underground structures introduced in Minecraft 1.21. They generate below Y=0 in newly created chunks, forming a grid-like layout of interconnected rooms and corridors made from copper and tuff blocks.

They are the only natural source of Trial Spawners, Vaults, Breezes, and key items like Breeze Rods, Heavy Cores, and Wind Charges, used to craft maces and other gear. Players can trigger Ominous Trials by entering with a Bad Omen, causing tougher mobs to spawn and unlocking improved loot.

The layout includes entrances, hallways, intersections, chambers, and atriums. Chambers feature combat encounters with mobs like zombies, skeletons, and breezes, which scale in difficulty depending on player count. Trial Spawners drop Trial Keys, used to open Vaults containing rare loot such as enchanted gear, diamonds, templates, and unique banner patterns.

Trial Chambers also include decorated pots, dispenser traps, loot barrels, and chests, with loot scaling based on location and challenge level. Each structure is a mid-game combat dungeon offering valuable resources and exclusive rewards for prepared players.

Properties

DimensionOverworld

MobsZombie, Husk, and 8 more

Consists ofTuff Bricks, Chiseled Tuff, and 38 more

Trial Chambers FAQ

Quick answers

Enter your world seed into the interactive seed-map finder on this page to instantly reveal the exact coordinates of every Trial Chamber in your world. Trial Chambers generate deep underground in the Overworld, so once you have the coordinates, dig or tunnel down to roughly Y -40 to Y 0 to reach the structure.

Trial Chambers generate deep underground in the Overworld, most commonly between about Y -40 and Y 0. They are not tied to a specific surface biome and can appear beneath nearly any biome, built from copper and tuff blocks.

Trial Chambers feature Trial Spawners that release waves of mobs, plus Vaults you open with Trial Keys for rewards like pottery sherds, armor trims, and emeralds. Triggering Bad Omen creates an Ominous Trial Chamber with Ominous Vaults, where a Heavy Core can drop so you can craft the Mace. Trial Chambers were added in 1.21.


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
ArrowArrowBest odds	63.9%	4.48	~1.6
EmeraldEmerald	39.7%	1.42	~2.5
Arrow of PoisonArrow of Poison	37.8%	2.24	~2.6
Wind ChargeWind Charge	37.8%	1.57	~2.6
Golden AppleGolden Apple	33.3%	0.33	~3.0
Iron IngotIron Ingot	29.6%	0.84	~3.4
Honey BottleHoney Bottle	29.6%	0.50	~3.4
Bolt Armor TrimBolt Armor Trim	25.0%	0.25	~4.0
Ominous BottleOminous Bottle	20.6%	0.22	~4.9
Aaron Cherof - PrecipiceAaron Cherof - Precipice	16.7%	0.17	~6.0
Guster Banner PatternGuster Banner Pattern	16.7%	0.17	~6.0
DiamondDiamond	10.7%	0.17	~9.3
Ominous Bottle (II)Ominous Bottle (II)	10.3%	0.11	~9.7
TridentTrident	8.3%	0.08	~12.0
BookBook	3.5%	0.04	~28.7
ShieldShield	2.6%	0.03	~38.3
Enchanted BowEnchanted Bow	2.6%	0.03	~38.3
BowBow	2.6%	0.03	~38.3
Golden CarrotGolden Carrot	1.7%	0.03	~57.5
Enchanted CrossbowEnchanted Crossbow	1.7%	0.02	~57.5
Enchanted Iron AxeEnchanted Iron Axe	1.7%	0.02	~57.5
Enchanted Iron ChestplateEnchanted Iron Chestplate	1.7%	0.02	~57.5
CrossbowCrossbow	1.7%	0.02	~57.5
Iron AxeIron Axe	1.7%	0.02	~57.5
Iron ChestplateIron Chestplate	1.7%	0.02	~57.5
Enchanted Diamond AxeEnchanted Diamond Axe	0.9%	<0.01	~115.0
Enchanted Diamond ChestplateEnchanted Diamond Chestplate	0.9%	<0.01	~115.0
Diamond ChestplateDiamond Chestplate	0.9%	<0.01	~115.0
Diamond AxeDiamond Axe	0.9%	<0.01	~115.0
MendingMending	0.34%	<0.01	~294.1
RiptideRiptide	0.34%	<0.01	~294.1
LoyaltyLoyalty	0.34%	<0.01	~294.1
ChannelingChanneling	0.34%	<0.01	~294.1
ImpalingImpaling	0.34%	<0.01	~294.1
SharpnessSharpness	0.28%	<0.01	~357.1
Bane of ArthropodsBane of Arthropods	0.28%	<0.01	~357.1
EfficiencyEfficiency	0.28%	<0.01	~357.1
FortuneFortune	0.28%	<0.01	~357.1
Silk TouchSilk Touch	0.28%	<0.01	~357.1
Feather FallingFeather Falling	0.28%	<0.01	~357.1


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
EmeraldEmeraldBest odds	56.2%	5.13	~1.8
Wind ChargeWind Charge	47.4%	5.87	~2.1
Arrow of Slowness (IV)Arrow of Slowness (IV)	37.5%	3.52	~2.7
ArrowArrow	37.5%	3.52	~2.7
Flow Armor TrimFlow Armor Trim	30.0%	0.30	~3.3
Enchanted Golden AppleEnchanted Golden Apple	30.0%	0.30	~3.3
DiamondDiamond	26.4%	0.73	~3.8
Flow Banner PatternFlow Banner Pattern	20.0%	0.20	~5.0
BookBook	16.6%	0.17	~6.0
Ominous BottleOminous Bottle	13.9%	0.15	~7.2
Block of EmeraldBlock of Emerald	13.8%	0.14	~7.2
Enchanted CrossbowEnchanted Crossbow	11.0%	0.11	~9.1
Block of IronBlock of Iron	11.0%	0.11	~9.1
CrossbowCrossbow	11.0%	0.11	~9.1
Lena Raine - CreatorLena Raine - Creator	10.0%	0.10	~10.0
Heavy CoreHeavy Core	10.0%	0.10	~10.0
Golden AppleGolden Apple	8.3%	0.08	~12.1
Enchanted Diamond AxeEnchanted Diamond Axe	8.3%	0.08	~12.1
Enchanted Diamond ChestplateEnchanted Diamond Chestplate	8.3%	0.08	~12.1
Diamond AxeDiamond Axe	8.3%	0.08	~12.1
Diamond ChestplateDiamond Chestplate	8.3%	0.08	~12.1
Wind BurstWind Burst	5.5%	0.06	~18.1
Ominous Bottle (III)Ominous Bottle (III)	4.63%	0.05	~21.6
Ominous Bottle (IV)Ominous Bottle (IV)	4.63%	0.05	~21.6
Ominous Bottle (V)Ominous Bottle (V)	4.63%	0.05	~21.6
Block of DiamondBlock of Diamond	2.8%	0.03	~36.3
BreachBreach	2.75%	0.03	~36.4
DensityDensity	2.75%	0.03	~36.4
KnockbackKnockback	1.1%	0.01	~90.9
PunchPunch	1.1%	0.01	~90.9
SmiteSmite	1.1%	0.01	~90.9
LootingLooting	1.1%	0.01	~90.9
MultishotMultishot	1.1%	0.01	~90.9


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
ArrowArrowBest odds	55.1%	5.21	~1.8
HoneycombHoneycomb	55.1%	3.47	~1.8
Wooden AxeWooden Axe	55.1%	0.69	~1.8
StickStick	31.0%	1.22	~3.2
Trial KeyTrial Key	6.8%	0.07	~14.7


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
Amethyst ShardAmethyst ShardBest odds	39.7%	6.51	~2.5
CakeCake	39.7%	1.16	~2.5
Block of IronBlock of Iron	39.7%	0.70	~2.5
DiamondDiamond	21.5%	0.35	~4.6
Block of EmeraldBlock of Emerald	11.2%	0.23	~8.9
Diamond AxeDiamond Axe	11.2%	0.12	~8.9
Diamond PickaxeDiamond Pickaxe	11.2%	0.12	~8.9
Block of DiamondBlock of Diamond	2.3%	0.02	~43.3


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
ArrowArrowBest odds	62.6%	6.67	~1.6
Glow BerriesGlow Berries	37.3%	2.67	~2.7
Baked PotatoBaked Potato	37.3%	1.33	~2.7
Stone PickaxeStone Pickaxe	37.3%	0.44	~2.7
TuffTuff	20.4%	1.67	~4.9
Arrow of PoisonArrow of Poison	20.4%	1.33	~4.9
Arrow of SlownessArrow of Slowness	20.4%	1.33	~4.9
Acacia PlanksAcacia Planks	20.4%	1.00	~4.9
TorchTorch	20.4%	1.00	~4.9
Bone MealBone Meal	20.4%	0.78	~4.9
Moss BlockMoss Block	20.4%	0.78	~4.9
Potion of Regeneration (0:45)Potion of Regeneration (0:45)	20.4%	0.44	~4.9
Potion of Strength (3:00)Potion of Strength (3:00)	20.4%	0.44	~4.9
Milk BucketMilk Bucket	20.4%	0.22	~4.9

Trial Chambers

Trial Chambers FAQ

What loot can you find in Trial Chambers?

Loot Tables

What mobs are found in Trial Chambers?

What blocks make up Trial Chambers?

Which maps lead to Trial Chambers?


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
Bamboo PlanksBamboo PlanksBest odds	49.3%	6.06	~2.0
Baked PotatoBaked Potato	49.3%	4.85	~2.0
Golden AxeGolden Axe	22.3%	0.24	~4.5
Golden PickaxeGolden Pickaxe	22.3%	0.24	~4.5
DiamondDiamond	5.9%	0.12	~16.8
BucketBucket	5.9%	0.09	~16.8
CompassCompass	5.9%	0.06	~16.8
Diamond PickaxeDiamond Pickaxe	5.9%	0.06	~16.8
Enchanted Diamond AxeEnchanted Diamond Axe	5.9%	0.06	~16.8
Diamond AxeDiamond Axe	5.9%	0.06	~16.8


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
TuffTuffBest odds	28.4%	4.42	~3.5
ScaffoldingScaffolding	19.6%	1.26	~5.1
Bamboo PlanksBamboo Planks	19.6%	0.95	~5.1
TorchTorch	19.6%	0.95	~5.1
Bamboo Hanging SignBamboo Hanging Sign	19.6%	0.53	~5.1
Ender PearlEnder Pearl	19.6%	0.32	~5.1
Stone AxeStone Axe	19.6%	0.21	~5.1
Stone PickaxeStone Pickaxe	19.6%	0.21	~5.1
HoneycombHoneycomb	10.2%	0.53	~9.8
Enchanted Iron AxeEnchanted Iron Axe	10.2%	0.10	~9.8
Iron AxeIron Axe	10.2%	0.10	~9.8


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
EmeraldEmeraldBest odds	35.6%	0.71	~2.8
ArrowArrow	28.5%	1.43	~3.5
Iron IngotIron Ingot	28.5%	0.43	~3.5
Trial KeyTrial Key	2.8%	0.03	~35.1
DiamondDiamond	1.4%	0.02	~70.2
Block of EmeraldBlock of Emerald	1.4%	0.01	~70.2
Lena Raine - Creator (Music Box)Lena Raine - Creator (Music Box)	1.4%	0.01	~70.2
Block of DiamondBlock of Diamond	0.3%	<0.01	~351.0


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
Fire ChargeFire ChargeBest odds	20.7%	1.24	~4.8
SnowballSnowball	20.7%	1.24	~4.8
ArrowArrow	13.8%	0.83	~7.2
Water BucketWater Bucket	13.8%	0.14	~7.2
EggEgg	6.9%	0.41	~14.5
Lingering Potion of HealingLingering Potion of Healing	3.4%	0.12	~29.0
Lingering Potion of Poison (0:11)Lingering Potion of Poison (0:11)	3.4%	0.12	~29.0
Lingering Potion of SlownessLingering Potion of Slowness	3.4%	0.12	~29.0
Lingering Potion of WeaknessLingering Potion of Weakness	3.4%	0.12	~29.0
Splash Potion of Poison (0:45)Splash Potion of Poison (0:45)	3.4%	0.12	~29.0
Splash Potion of Slowness (1:30)Splash Potion of Slowness (1:30)	3.4%	0.12	~29.0
Splash Potion of Weakness (1:30)Splash Potion of Weakness (1:30)	3.4%	0.12	~29.0


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
ArrowArrowBest odds	100.0%	6.00	~1.0


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
Water BucketWater BucketBest odds	100.0%	1.00	~1.0


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
Trial KeyTrial KeyBest odds	50.0%	0.50	~2.0
BreadBread	15.0%	0.30	~6.7
Cooked ChickenCooked Chicken	15.0%	0.15	~6.7
Baked PotatoBaked Potato	10.0%	0.20	~10.0
Potion of Regeneration (0:45)Potion of Regeneration (0:45)	5.0%	0.05	~20.0
Potion of Swiftness (3:00)Potion of Swiftness (3:00)	5.0%	0.05	~20.0


ItemThe item this chest can contain. Follow it for its own page. ChanceHow likely this appears — the bar compares it at a glance. Avg. per ChestThe average number you'll collect per chest opened, counting the empty ones. Avg. Chests to SearchRoughly how many chests of this type you'd open before finding one.
Ominous Trial KeyOminous Trial KeyBest odds	30.0%	0.30	~3.3
Baked PotatoBaked Potato	21.0%	0.63	~4.8
SteakSteak	21.0%	0.32	~4.8
Golden CarrotGolden Carrot	14.0%	0.21	~7.1
Potion of Regeneration (0:45)Potion of Regeneration (0:45)	7.0%	0.07	~14.3
Potion of Strength (3:00)Potion of Strength (3:00)	7.0%	0.07	~14.3

Trial Chambers

Trial Chambers FAQ

What loot can you find in Trial Chambers?

Loot Tables

What mobs are found in Trial Chambers?

What blocks make up Trial Chambers?

Which maps lead to Trial Chambers?

Related