Basalt Deltas


| Structures | |
|---|---|
| Features | |
| Blocks | |
|
Climate | |
| Temperature |
2.0 |
| Downfall |
0.0 |
| Precipitation |
No |
|
Colors | |
| Fog color |
|
| Grass color |
|
| Foliage color |
|
| Water color |
|
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"title": "Basalt Deltas",
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"label": "(link to Features article, displayed as Features)"
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{
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"label": "Blocks"
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{
"field": "",
"label": "Climate"
},
{
"field": "2.0",
"label": "(link to Biome#Temperature article, displayed as Temperature)"
},
{
"field": "0.0",
"label": "(link to Biome#Downfall article, displayed as Downfall)"
},
{
"field": "No",
"label": "(link to Biome#Precipitation article, displayed as Precipitation)"
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{
"field": "",
"label": "Colors"
},
{
"field": "<span style=\"display: inline-block; white-space: nowrap;\"><span style=\"display: inline-block; background-color: #685F70; border: 1px solid #888; border-radius: 0.3em; color: transparent; width: 1em; height: 1em; vertical-align: -0.36em; margin-right: -0.1em\"><br></span> #685F70</span>",
"label": "Fog color"
},
{
"field": "<span style=\"display: inline-block; white-space: nowrap;\"><span style=\"display: inline-block; background-color: #BFB755; border: 1px solid #888; border-radius: 0.3em; color: transparent; width: 1em; height: 1em; vertical-align: -0.36em; margin-right: -0.1em\"><br></span> #BFB755</span>",
"label": "Grass color"
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{
"field": "<span style=\"display: inline-block; white-space: nowrap;\"><span style=\"display: inline-block; background-color: #AEA42A; border: 1px solid #888; border-radius: 0.3em; color: transparent; width: 1em; height: 1em; vertical-align: -0.36em; margin-right: -0.1em\"><br></span> #AEA42A</span>",
"label": "Foliage color"
},
{
"field": "<span style=\"display: inline-block; white-space: nowrap;\"><span style=\"display: inline-block; background-color: #3F76E4; border: 1px solid #888; border-radius: 0.3em; color: transparent; width: 1em; height: 1em; vertical-align: -0.36em; margin-right: -0.1em\"><br></span> #3F76E4</span>",
"label": "Water color"
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"images": [
"Basalt Deltas.png",
"Basalt Deltas Vibrant Visuals.png"
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The basalt deltas is a volcanic biome found in the Nether.
Description
The basalt deltas is the second rarest Nether biome, making up around 16% of the Nether by volume, and can generate next to any other Nether biome except for the crimson forest.
The rough and jagged terrain of basalt deltas is composed largely of basalt and blackstone and features numerous deltas, shallow pools of lava, and magma blocks, typically reaching depths of 1 to 3 blocks. The biome's fog is a dull lilac color, and ambient ash particles float through the air. Archipelagos with islands of different sizes can be found around the lava seas nearby. On the ceiling, glowstone blobs generate as usual. Both brown and red mushrooms still grow in this biome on top of the basalt blocks.
Nether fortresses and ruined portals can be found here. Nether quartz ore, Nether gold ore, and the rare ancient debris generate underground, but are more difficult to obtain due to the abundance of deltas and lava seas. Ore also spawns more frequently to compensate for the significantly reduced amount of netherrack in the biome. Bastion remnants are not present, making basalt deltas the only Nether biome to not feature them.
Magma cubes have a higher spawn rate in this biome than in any other biome. Occasionally, a ghast can be spotted. Like in all Nether biomes, striders wander the lava lakes, and sometimes spawn trapped in the countless deltas.
Mobs
The following mobs naturally spawn here:
| Mob | Spawn weight | Group size |
|---|---|---|
| Monster category | ||
| 40⁄140 | 1 | |
| 100⁄140 | 2–5 | |
| Creature category | ||
| 1 | 2–4 | |
- ↑ Only 5% of spawn attempts succeed.
{ "hasNotes": true, "notes": { "Ghast": "Only 5% of spawn attempts succeed." }, "1": { "totalWeight": 140, "mobs": [ { "note": "Only 5% of spawn attempts succeed.", "mob": "Ghast", "weight": 40, "notename": "Ghast", "size": "1" }, { "size": "2-5", "mob": "Magma Cube", "weight": 100 } ], "category": "monster" }, "2": { "totalWeight": 60, "mobs": [ { "size": "2-4", "mob": "Strider", "weight": 60 } ], "category": "creature" } }
| Mob | Spawn weight | Group size |
|---|---|---|
| Monster category | ||
| 100 | 2–5 | |
| 40 | 1 | |
| Creature category | ||
| 1 | 2–4 | |
{ "notes": [], "1": { "totalWeight": 140, "mobs": [ { "size": "2-5", "mob": "Magma Cube", "weight": 100 }, { "size": "1", "mob": "Ghast", "weight": 40 } ], "category": "monster" }, "2": { "totalWeight": 20, "mobs": [ { "size": "2-4", "mob": "Strider", "weight": 20 } ], "category": "creature" } }
Sounds
Music
| Filename in Minecraft |
Gameplay | Soundtrack Title | Soundtrack | Track preview | Weight |
|---|---|---|---|---|---|
| so_below.ogg | Soul Sand Valley and Basalt Deltas | "So Below" | Minecraft: Nether Update (Original Game Soundtrack) No. 3 | 7 | |
| nether1.ogg | The Nether | "Concrete Halls" | Minecraft - Volume Beta No. 7 | 1 | |
| nether2.ogg | The Nether | "Dead Voxel" | Minecraft - Volume Beta No. 3 | 1 | |
| nether3.ogg | The Nether | "Warmth" | Minecraft - Volume Beta No. 11 | 1 | |
| nether4.ogg | The Nether | "Ballad of the Cats" | Minecraft - Volume Beta No. 15 | 1 |
Ambience
Nether ambience plays while the player is in the Nether.
| Name | Sound | Group |
|---|---|---|
| Basalt Deltas Ambience | Loop | |
| Basalt deltas active 1 (Unused) |
Loop Additions | |
| Basalt deltas active 2 (Unused) |
||
| Basalt deltas active 3 (Unused) |
||
| Basalt deltas active 4 (Unused) |
||
| Basalt Deltas Basalt Ground 1 | ||
| Basalt Deltas Basalt Ground 2 | ||
| Basalt Deltas Basalt Ground 3 | ||
| Basalt Deltas Basalt Ground 4 (Unused) |
||
| Basalt Deltas Click 1 | ||
| Basalt Deltas Click 2 | ||
| Basalt Deltas Click 3 | ||
| Basalt Deltas Click 4 | ||
| Basalt Deltas Click 5 | ||
| Basalt Deltas Click 6 | ||
| Basalt Deltas Click 7 | ||
| Basalt Deltas Click 8 | ||
| Basalt Deltas Debris 1 | ||
| Basalt Deltas Debris 2 | ||
| Basalt Deltas Debris 3 | ||
| Basalt Deltas Heavy Click 1 | ||
| Basalt Deltas Heavy Click 2 | ||
| Basalt Deltas Long Debris 1 | ||
| Basalt Deltas Long Debris 2 | ||
| Basalt Deltas Plode 1 | ||
| Basalt Deltas Plode 2 | ||
| Basalt Deltas Plode 3 | ||
| Basalt Deltas Twist 1 | ||
| Basalt Deltas Twist 2 | ||
| Basalt Deltas Twist 3 | ||
| Basalt Deltas Twist 4 |
Data values
ID
| Name | Identifier | Numeric ID | Translation key |
|---|---|---|---|
basalt_deltas | 173 | biome |
| Name | Identifier | Numeric ID |
|---|---|---|
basalt_deltas | 181 |
Achievements
| Icon | Achievement | In-game description | Actual requirements (if different) | Gamerscore earned | Trophy type (PS) | ||
|---|---|---|---|---|---|---|---|
| PS4 | Other | ||||||
| Adventuring Time | Discover 17 biomes. | Visit any 17 biomes. Does not have to be in a single world. | 40 | Silver | |||
| Hot tourist destination | Visit all Nether biomes | Note: Can be completed if the player visits the biomes in different worlds. | 30 | Silver | |||
Advancements
| Icon | Advancement | In-game description | Actual requirements (if different) |
|---|---|---|---|
![]() | Hot Tourist Destinations | Explore all Nether biomes | Visit all of the 5 following biomes: The advancement is only for Nether biomes. Other biomes may also be visited, but are ignored for this advancement. |
History
| Java Edition | |||||||
|---|---|---|---|---|---|---|---|
| 1.16 | 20w15a | Added the basalt deltas. | |||||
| 20w16a | Increased the number of lava lakes on basalt deltas. | ||||||
| 20w21a | Ancient debris and Nether gold ore now generate more often. | ||||||
| 1.18 | 21w41a | The water fog color of basalt deltas has been changed from #423e42 to #050533 despite water not being able to exist in the Nether. | |||||
| Bedrock Edition | |||||||
| 1.16.0 | beta 1.16.0.57 | Added basalt deltas. | |||||
| 1.16.100 | beta 1.16.100.54 | The ceiling of basalt deltas is now made out of basalt, instead of netherrack. | |||||
Data history
| Java Edition | |||||||
|---|---|---|---|---|---|---|---|
| 1.18 | 21w37a | Prior to the removal of numerical biome IDs, this biome's numerical ID was 173. | |||||
Issues
Issues relating to "Basalt Deltas" are maintained on the bug tracker. Issues should be reported and viewed there.
Trivia
- Basalt deltas have no unique mood-based ambient sounds in dark areas and instead borrow those of the Nether wastes.
- According to Felix Jones, the basalt deltas biome has a subtle Easter egg that has not yet been found by anyone.[1]
- Much of the ambience in the basalt deltas resembles the clicking of a Geiger counter, used to measure radioactivity.
Gallery
Screenshots
-
Typical view. -
Floor view. -
A Nether fortress looked at from the floor of the deltas. -
Another Nether fortress overlooking the deltas. -
A valley within the deltas. -
Deltas above a lava ocean. -
Fortress intersecting a lava ocean and more deltas. -
Basalt deltas hanging over a lava sea. -
Basalt columns in the air and on the ground. -
Blackstone in a basalt deltas. -
Some blocks placed in a basalt deltas. -
Fog in a basalt deltas. -
Terrain in a basalt deltas. -

-
Basalt deltas. -
A Basalt Delta as it appears in Minecraft Dungeons. -
A basalt deltas single biome world before 1.18.
References
- ↑ "In 1.16 I put a really, really, REALLY subtle & obscure easter-egg/reference into the basalt deltas biome that is hiding there in very plain sight. If someone ever noticed it; the pay-off would be so underwhelming that they'd be angry they ever looked for it." – @Xilefian on X (formerly Twitter), February 28, 2022
External links
- Around the Block: Basalt Deltas – Minecraft.net on August 13, 2020
