What are Trial chambers in Minecraft? The new structures in Minecraft 1.21 update are underground bases that serve as a mid-game combat challenge. They mostly have copper blocks and tuff bricks. It's also the only place where trial spawners and vaults naturally generate.
Knowing that you may want to fight mobs and get good loot in this challenge, we have listed the best seeds for trial chambers Minecraft 1.21 below.
1. Mineshaft Above a Trial Chamber (Java)

- Seed code: 695073197
- Spawn biome: Forest
- Coordinates for the trial chamber: X:263 Z:135
You will spawn at the edge of a forest biome rich in resources. The nearest trial chamber is only about 300 blocks away. Dig down there to find a large trial chamber with Breeze, husk, slime, and trial spawners in Minecraft 1.21.
Additionally, there is a massive mineshaft above part of the chamber with many regular spawners. Some parts of the chamber form the floor of the mineshaft.
2. Lush Trial Chambers (Java & Bedrock)

- Seed code: -1449152180364425485
- Spawn biome: Plains
- Coordinates for the first trial chambers: X:-1417 Z: 103
- Coordinates for the second trial chambers: X: -953 Z: 327
- Coordinates for the third trial chambers: X: -441 Z: 793
This seed is bright and beautiful, bringing you to a resource-rich plains biome. For great loot, head west or south.
You can also discover a vast lush cave system leading to multiple trial chambers with Glow Berries, Clay, Vines, Grass, and Spore Blossoms. There are the 3 coordinates for three trial chambers to explore.
3. Trial Chamber next to Ancient City (Bedrock)

- Seed code: 4012088974005424937
- Spawn biome: Desert
- Coordinates for the trial chamber: X: 340 Z: 820
- Coordinates for the ancient city: X: 480 Z: 820
Even though Trial Chambers and Ancient Cities are both underground, it is rare for them to be close together. This lucky seed makes it happen. Go to the trial chamber coordinates first. After exploring it, walk to the nearby ancient city.
The ancient city is deeper than the trial chamber, so you might need to dig up or down depending on which one you explore first. This special spot where the two buildings meet is perfect for rebuilding them into one cool structure.
4. Stronghold Library in Trial Chamber (Java)

- Seed Code: 2895849693574331500
- Spawn Biome: Forest
- Coordinates: X: 1643 Z: -1603
Among the seeds for Trial Chambers Minecraft, this is a unique one with two essential structures - strongholds and trial chambers. You can find the intersection of them at the coordinates. There's even stronghold library fitting neatly into the corridor.
While exploring the trial chamber, you may find some areas hard to access due to the stronghold merging into it. This means you can explore and loot both structures at once.
Do note that the trial chambers in this seed will spawn Breezes, Husks, Strays, and Spiders.
5. Venomous Mushroom Island Trial Chambers (Java & Bedrock)

- Seed code: -5592633653095784779
- Spawn biome: Forest
- Coordinates: X: 1961 Z: 295
This special seed of Trial Chambers Minecraft works for both Java and Bedrock editions. At the above coordinates, you will see a small, isolated mushroom island. But what makes it cool is the trial chambers beneath it.
You can safely dig down to explore and loot the vaults. However, be prepared as you may face venomous cave spiders and Bogged skeletons.
If you dare to try this tough Minecraft 1.21 Trial Chamber seed, make sure to breed cows for milk and bring the best food items for sustenance.
6. Trial Chamber Beneath a Village (Bedrock)
Seed Code: 1284930024
Spawn Biome: Plains
Coordinates: X: 152, Z: 312
Details: This Bedrock seed spawns you in a plains biome near a village. Directly beneath the village lies a trial chamber with Breeze, zombie, and skeleton trial spawners. The village provides early resources like food and tools, making it easier to prepare for the chamber’s challenges. The proximity of the village and chamber makes this seed ideal for players wanting a quick start.
7. Frozen Trial Chamber Near Igloo (Java)
Seed Code: -3925080017234519876
Spawn Biome: Snowy Plains
Coordinates: X: -512, Z: 208
Details: Spawn in a snowy plains biome with an igloo nearby. At the coordinates, dig down to find a trial chamber with stray and Breeze trial spawners, fitting the cold theme. The igloo offers early loot like golden apples, and the snowy biome provides snow for unique building opportunities. This Java seed is perfect for players who enjoy icy environments.
8. Trial Chamber in a Badlands Canyon (Java & Bedrock)
Seed Code: 789321456987123
Spawn Biome: Badlands
Coordinates: X: 672, Z: -144
Details: This seed, compatible with both Java and Bedrock, places you in a striking badlands biome. The trial chamber at the coordinates is embedded within a dramatic canyon, featuring Breeze, spider, and husk trial spawners. The badlands offer exposed mineshafts and gold, enhancing your preparation for the chamber’s challenges.
9. Ocean Monument and Trial Chamber Combo (Bedrock)
Seed Code: -8273641923746501
Spawn Biome: Ocean
Coordinates:
- Trial Chamber: X: 88, Z: 504
- Ocean Monument: X: 136, Z: 488
Details: This Bedrock seed spawns you in an ocean biome with a trial chamber and an ocean monument in close proximity. The trial chamber contains Breeze and drowned trial spawners, complementing the aquatic theme. The monument offers prismarine and sponge loot, making this seed a thrilling choice for underwater adventurers.
10. Triple Trial Chamber Cluster (Java)
Seed Code: 4567891236547890
Spawn Biome: Savanna
Coordinates:
- First: X: 328, Z: -456
- Second: X: 504, Z: -312
- Third: X: 216, Z: -680
Details: This Java seed spawns you in a savanna biome with three trial chambers within a 500-block radius, each containing a mix of Breeze, zombie, and skeleton trial spawners. The savanna’s open terrain makes navigation easy, and nearby villages provide resources. Ideal for players seeking multiple chambers in one seed.
>>> Also read: Must-Have Items For Adventures In Minecraft Trial Chamber 1.21
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