Mineshaft

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Mineshaft
Mineshaft.pngBadlands mineshaft.png
Biomes
Regular mineshaft
Any Overworld biome except for Badlands
Badlands mineshaft
Badlands
Consists of
Can generate in
existing chunks

No

Mineshafts are large, underground generated structures found in all Overworld biomes. As their name suggests, they are maze-like complexes of tunnels which may have valuable ores exposed on the walls and floor.

Generation[edit]

Mineshafts generate naturally in the Overworld; they are usually found underground but can occasionally be found in the ocean. They are generated before chunk features such as ores. Multiple mineshafts can generate near each other and intersect, producing larger complexes. On a side note, mineshafts can intersect with other cave systems, and corridors generate a floor of wooden planks if they cross over empty space.

Mineshafts often generate on the surface in badlands biomes. Badlands mineshafts are composed of dark oak planks and fences, and generated railways are more complete above ground. Since badlands biomes generate gold ore far more often and at higher altitudes than other biomes, heading to mineshafts there is sensible if one intends to gather a lucrative gold haul for piglin bartering in the Nether.

Structure[edit]

Main article: /Structure
A minecart with chest in a mineshaft.
The central dirt room of the mineshaft.

Mineshafts consist of the following features:

  • Starting point - a large room with a flat dirt floor, an arched ceiling and up to 4-5 exits, usually one in each direction. Each mineshaft generates one starting point.
  • Corridors - 3×3 tunnels/passageways and junctions supported by wooden reinforcements constructed with planks and fences; underground, these are built with oak wood, but in badlands biomes they are made of dark oak wood instead. On long corridors, these supports are placed four blocks away from each other, and some have missing planks which may be filled up with cobwebs or blocks of stone jutting out from the top. The passageways are connected by incomplete rail systems on the ground, on which minecarts with chests may generate.
  • Crossings - dual-floor, 5x5 intersections supported by wooden beams.
  • Staircases - diagonal tunnel sections (note that stair blocks are not used).
  • Spawner areas - certain corridors that are packed with cobweb masses concealing cave spider spawners.

Loot[edit]

See also: Chest loot

In Java Edition, each mineshaft chest contains items drawn from 3 pools, with the following distribution:

Item Stack Size [A] Weight [B] Chance [C] Avg.
per chest
[D]
Avg. # chests
to search
[E]
2–4× 2–4×
Rails 4–8205078.4%7.2001.3
Torch 1–16155065.7%7.6501.5
Bread 1–3158344.3%1.0842.3
Name Tag 1307142.3%0.4232.4
Coal 3–8108331.6%1.9883.2
Beetroot Seeds 2–4108331.6%1.0843.2
Melon Seeds 2–4108331.6%1.0843.2
Pumpkin Seeds 2–4108331.6%1.0843.2
Iron Ingot 1–5108331.6%1.0843.2
Golden Apple 1207128.2%0.2823.6
Activator Rail 1–455027.1%0.7503.7
Detector Rail 1–455027.1%0.7503.7
Powered Rail 1–455027.1%0.7503.7
Lapis Lazuli 4–958316.9%1.1755.9
Redstone Dust 4–958316.9%1.1755.9
Gold Ingot 1–358316.9%0.3615.9
Enchanted Book[F] 1107114.1%0.1417.1
Diamond 1–238310.4%0.1639.6
Nothing[G] 15717.0%0.07014.2
Iron Pickaxe 15717.0%0.07014.2
Enchanted Golden Apple 11711.4%0.01471.0

In Bedrock Edition, each mineshaft chest contains items drawn from 3 pools, with the following distribution:

Item Stack Size [A] Weight [B] Chance [C] Avg.
per chest
[D]
Avg. # chests
to search
[E]
2–4× 2–4×
Rails 4–8205078.4%7.2001.3
Torch 1–16155065.7%7.6501.5
Bread 1–3158344.3%1.0842.3
Name Tag 1307142.3%0.4232.4
Coal 3–8108331.6%1.9883.2
Beetroot Seeds 2–4108331.6%1.0843.2
Melon Seeds 2–4108331.6%1.0843.2
Pumpkin Seeds 2–4108331.6%1.0843.2
Iron Ingot 1–5108331.6%1.0843.2
Golden Apple 1207128.2%0.2823.6
Activator Rail 1–455027.1%0.7503.7
Detector Rail 1–455027.1%0.7503.7
Powered Rail 1–455027.1%0.7503.7
Lapis Lazuli 4–958316.9%1.1755.9
Redstone Dust 4–958316.9%1.1755.9
Gold Ingot 1–358316.9%0.3615.9
Enchanted Book[F] 1107114.1%0.1417.1
Diamond 1–238310.4%0.1639.6
Nothing[G] 15717.0%0.07014.2
Iron Pickaxe 15717.0%0.07014.2
Enchanted Golden Apple 11711.4%0.01471.0
  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 All enchantments are equally probable, including treasure enchantments (except Soul Speed), and any level of the enchantment is equally probable.
  7. 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.


History[edit]

Java Edition Beta
1.8Pre-releaseAdded mineshafts.
Pre-release 2 ;)Mineshafts are a lot less dense and do not stretch out as far as before.[1]
To counter this change they were made 212 times as common throughout the world.[2]
1.8.1Support beams in mineshafts are converted from oak planks to oak fences.
Java Edition
1.2.112w05aAdded wooden bridges under floating sections of mineshafts.
1.4.612w50aAdded enchanted books to mineshaft chests.
1.513w02aChanged mineshaft chests to minecarts with chests on rails.
1.7.213w36aMineshafts appear as often as in the future release of Java Edition 1.8-pre1 again,[3] but without any increase in density or size, which makes them 60% less common than before.
1.915w44aAdded torches, beetroot seeds, enchanted & normal golden apples, and activator, detector, and powered rails to minecart chests.
Removed saddles and iron horse armor from minecart chests.
Decreased the average yields of iron & gold ingots, melon & pumpkin seeds, diamonds, lapis lazuli, redstone, and bread.
Increased the average yield of iron pickaxes, and substantially increased the average yield of rails and enchanted books.
1.1016w20aMineshafts can now generate on the surface in mesa biomes, using dark oak planks and fences rather than oak.
If directly exposed to the sky during generation, no wooden parts spawn at that exact location.
No longer generate floating in the air when using a low ground level in a superflat world.
Pocket Edition Alpha
v0.9.0build 1Added mineshafts.
Cave spider spawners are replaced with regular spiders until potion effects are added.
v0.10.0September 9, 2014Tommaso Checchi tweeted a picture of mineshafts generated at surface level within a mesa, in a mesa biome.
build 1Mineshafts can now generate on the surface in mesa biomes.
Above-ground mineshafts now use dark oak planks and fences rather than oak.
v0.11.0build 12Mineshafts now generate with cave spider spawners.
v0.14.0build 1Mineshafts now generate minecarts with chests.
v0.15.0build 1Name tags now can be found inside chest minecarts.
Bedrock Edition
1.2.0?Mineshafts are now more common.
1.11.0beta 1.11.0.1Mineshafts no longer generate in giant clusters.
Legacy Console Edition
TU5CU1 1.0 Patch 11.0.1Added mineshafts.
TU12Added wooden bridges under floating sections of mineshafts.
TU43CU33 1.36 Patch 13Mineshafts can now generate on the surface in mesa biomes, using dark oak planks and fences rather than oak.
New Nintendo 3DS Edition
0.1.0Added mineshafts.

Issues[edit]

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

Trivia[edit]

  • When generated, mineshafts cut through the top bedrock layer(s), if they happen to generate at the bedrock layers.
  • Mineshafts can generate on top of other mineshafts. If you see two different ones intersecting each other anomalously, they are two different shafts, even if they somehow meet up perfectly elsewhere.
  • Mushrooms can be found at the bottom of mineshafts.
  • Despite it being considered a technical fault and odd generation, it is common for mineshafts to intersect ravines.
  • The dirt room of a mineshaft never generates in the same chunk as (0, 0) in any Minecraft world.‌[Java Edition only]

Publicity[edit]

  • In LEGO Minecraft Micro World – "The Village", a mineshaft is beneath a village.[4]

Gallery[edit]

Badlands mineshafts[edit]

Odd generation[edit]

References[edit]