Abandoned Mine Shafts are usually filled with cobwebs with many cave spiders, and contain at least one monster spawner. Abandoned Mine Shafts are also rich with ore such as iron, gold, and sometimes hold lapis lazuli, diamonds, and very rarely, emeralds. The 'shafts' are made of wooden planks. Abandoned Mine Shafts provide a very good source of wood while the player mines underground (there is also rare chance of having a Mine Shaft that has a Ravine inside of it).
There are chests (usually in minecarts) spread throughout Abandoned Mine Shafts that can contain resources such as gold and iron ingots, ores, food, or seeds. Some items such as rails and ores are found during the excavation in the shaft. Items such as diamonds, wood, and rails are rare to find in chests. On occasion abandoned mine shafts can connect to strongholds and dungeons. Abandoned Mine Shafts are a generated structure. Beginners should try and find an Abandoned Mine Shaft in underground ravines. It should be noted that Pocket Edition currently does not have chests in Mineshafts.
Exploring a mineshaft could be quite dangerous, otherwise beneficial. Be sure you have the following:
- A stone, iron, or diamond sword to fight any hostile mobs that spawn.
- An iron or diamond pickaxe; there still could be ores!
- Buckets of milk, these can help cure poison.
- Food to replenish hunger and to enable health regeneration.
- Cheap blocks like cobblestone or dirt so that you can pillar jump or build a bridge if necessary.
- Shears to collect the string from the cobwebs.
- Armour to protect yourself from fall damage or hostile mobs.
- Torches to mark your path and to prevent mobs from spawning.
- If possible, bring potions to help give you the upper hand in mob combat, preferably potions of strength, regeneration, or splash potions of instant health.
- Lapis Lazuli
- Redstone Dust
- Iron Ingot
- Gold Ingot
- Melon Seeds
- Pumpkin Seeds
- Iron Pickaxe
- Golden Apple
- Wood planks
- In the 1.8 Pre-Release 1 and 2, support beams in mines were only made of planks. Fences were added later in the 1.8 version.
- All abandoned mine shafts have a companion cavern that follows it.
- It is possible for mine shafts to pass through ravines and be exposed.
- Mine shafts can intersect with a dungeon or stronghold, although this is very rare.
- However, this is more common in the console editions as worlds are far, far smaller, providing less area for the structures to generate separately.
- A rare glitch causes a mine shaft to be floating in the sky when using the preset Desert.
- In Minecraft: Pocket Edition Version 0.10.0, there are above-ground mine shafts in Mesa Biomes. These Mineshafts are made of spruce planks, have no spawners, and contain mainly gold ore as treasure.