Bedrock Edition 1.17.0

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This page documents an update currently being worked on; therefore, not all official feature names or items are mentioned.
Caves & Cliffs.png

Bedrock Edition

Official name

Caves & Cliffs

Planned release date


Other instances
of 1.17

1.17.0, the first release of the Caves & Cliffs update, is an upcoming major update to Bedrock Edition set to release in mid-2021.[1] It was first announced during Minecraft Live 2020 on October 3, 2020.[2]

No dates have been given for the release of development versions of this update so far, or the final release.



Powder Snow
  • A block in which players sink in, somewhat similar to scaffolding.


Goat Horn
  • Drops from a goat when it rams into a block.



Planned additions[edit]

Main article: Caves & Cliffs

Please note that the names of many features are currently placeholders.


Restoring clay pots.png Clay Pot
  • Seems to use the texture of clay.
  • Ceramic Shards can be incorporated into an unfired pot.
  • Can be fired by lighting fire under the pot.
  • Pot can fit up to 8 Ceramic Shards.
Painted Clay Pot.png Painted Clay Pot
  • Seems to use the texture of terracotta.
  • Created by firing a clay pot.
  • Upon firing, any placed Ceramic Shards become permanently incorporated on to the clay pot.
Azalea Leaves.png Blooming Azalea Leaves.png Azalea Leaves
  • Part of a new tree, marking the location of the lush cave.
  • Has variants with either no blossoms, pink blossoms, or purple blossoms.
Baby azalea tree.png Baby blooming azalea tree.png Azalea Shrub[unofficial name]
  • Has variants with either no blossoms, pink blossoms, or purple blossoms.
Azalea Roots.png Azalea Roots
  • Part of the Azalea plant.
  • Resembles a dirt block, but with the roots of the Azalea tree intertwined.
  • Probably is the source of all the life in lush caves.
  • May be a new variant of the dirt block.
Roots bloody roots.png Hanging Azalea Roots[unofficial name]
  • Seen in the distance of a lush caves biome behind a spore blossom.
  • Can also be seen hanging beneath the dirt variant that spawns below the Azalea tree and on the ceiling in the axolotl clip, possibly just a decorative feature of this block.
New Vine.png New Vine 2.png Glow Berry Vines[unofficial name]
  • Light source.
  • Grows edible glow berries.
Spore Blossom.png Spore Blossom
  • Can be placed on ceilings.
  • Sends particles downward when opened.
  • This item can be found in the lush caves.
Dripleaf Plant Deb2.png Dripleaf Plant
  • A plant that can be used for platforming.
  • If the player stands on top of the plant for 2 seconds (40 ticks), the player falls through the plant.
  • Can be placed on a grass block.
Baby dripleaf plants.png Small Dripleaf Plant[unofficial name]
  • Appears highly varied in models.
Unidentified foliage object.png Moss Block[unofficial name]
  • An opaque block that appears grassy on all sides.
  • Can be found in lush caves.
Foliage carpet.png Moss Blanket[unofficial name]
  • Same texture as the moss block, but one pixel thick.
Sculk Block Dev2.png Sculk Block
  • Generates in the mysterious new cave biome, referred to as the "deep dark" temporarily.
  • Has an animated texture
  • May be used in redstone as seen in this video when they talk about the sculk sensor.[1]
Unidentified Sculk Block.png Sculk Trap[unofficial name]
This image shows the sculk blocks in redstone implying that the other sculk blocks also have redstone uses.
  • Generates in the deep dark biome
  • Has a different top texture than the Sculk Block and Sculk Chute.[3]
  • May be used in redstone as seen in this video when they talk about the sculk sensor.[2]
Sculk Something Dev2.png Sculk Chute[unofficial name]
  • Generates in the deep dark caves.
  • Made of sculk and a bone-like material.[4]
  • May be used in redstone as seen in this video when they talk about the sculk sensor.[3]
Sculk Growth Dev2.png Sculk Growth
  • Generates in the deep dark cave biome.
  • Generates in a layer on top of blocks, similar to snow.
  • Some have parts that are transparent, allowing the player to see the block it is on top of.
  • May be used in redstone as seen in this video when they talk about the sculk sensor.[4]
Sculk Sensor Dev4.png Sculk Sensor
  • Generates in the deep dark cave biome.
  • Can be used for wireless redstone.
  • Senses vibrations created by things such as block placement, footsteps, and projectiles, including fishing rods.[5]
  • Wool can occlude its ability to sense. This can be placed between or completely around the source of the input.
  • Can be used with a piston to create a wireless redstone clock.
  • Particle of the Vibration.gif Emits particles when it senses a vibration nearby.
  • Are not affected by ambient weather such as rain,[6] as well as other sculk sensors and the warden.[7]
Unnamed Stone.png Darkstone[unofficial name]
  • Can be found around the deep dark cave biome walls.
  • Can be found in large chunks.
Unspecified underground light sources
  • A video by Henrik Kniberg explicitly states that the temporary showcased feature of ore blocks emitting light was intended as a placeholder for underground light sources, potentially hinting at further new cave light sources.[8]


Axolotl Bucket JE1.png Bucket of Axolotl
  • Obtained by using a water bucket on an axolotl, similar to fish.
  • Had no name in the Minecraft Live 2020 demo, showing its translation string item.minecraft.axolotl_bucket.
Brush.png Brush
  • Used to sweep away debris from archaeological items.
  • Sweeps debris off archaeological items one layer at a time. If interrupted, the block it was being used on simply disappears, and does not yield custom block heights.
  • Also comes in a blue-green variant: Brush 2.png
    • This may imply a connection to copper, as both the variant and normal brushes have corresponding colors to the blocks shown.
Blue Ceramic Shard.png Orange Ceramic Shard.png Ceramic Shard 1.png Ceramic Shard 2.png Ceramic Shard 3.png Ceramic Shard 4.png Ceramic Shards
  • Obtained with a brush at archeological sites.
  • Come in different colors and different designs, each depicting a different picture, such as an ender dragon, a cow, alex, a skeleton, a tree and a vindicator.
  • Can be placed/customized on clay pots.
  • Currently using placeholder art, according to Jasper Boerstra.[9]
Glow Berries
Spawn Eggs
  • Warden Spawn Egg.png The Warden spawn egg is visually confirmed but not yet implemented.[10]


Axolotl (albino).png Axolotl (brown).png Axolotl (green).png Axolotl
"Axolotl" redirects here. For the music track, see Music § Underwater music.
  • Based on the critically endangered Mexican salamander with the same name in real life.
  • Found in bodies of water within lush caves biomes.
  • The first amphibian added to Minecraft.
  • Can be caught in a bucket like fish.
    • Can be tamed by capturing it in a bucket.
  • Come in different colors (leucistic, yellow, green, brown, and purple/pink).[2]
  • Plays dead when damaged, receiving Regeneration. Appears to turn invisible or teleport after this, although the latter may be just a bug or a glitch.
    • This regeneration ability is likely based on how real axolotls can regrow lost limbs.
  • Attacks drowned, guardians, elder guardians and fish. Damage is yet to be confirmed.
  • Sometimes can give Regeneration to the player who tamed it.
Glow Squid.png Glow Squid
Warden.png Warden
A picture of the Warden and Iron Golem standing side by side
  • Spawns in the new deep dark biome.
  • The first blind mob.
  • When sensing movement, it moves toward the source of the movement.
    • When attacked, it path finds toward the player.
    • Seems to follow the same rules as the sculk sensor when detecting noise.
      • When it detects a vibration, the growths on its head rattle and light up, similar to the sculk sensor.
    • If any projectile, like a snowball or an arrow, is thrown and lands near the Warden, it causes the mob to head to the location of where the projectile landed, due to the projectile creating movement and noise. This tactic can be used in order to cause a distraction.
    • Does not detect players that are sneaking.
    • Can detect players that are invisible.[12]
    • Can detect players using elytra.[13]
    • When aggravated for long enough, the warden follows the player continuously, regardless of any other distractions.
    • Attacks any mob that makes vibrations, not just players.[14]
    • Can detect ringing bells.[15]
    • Can detect players eating.[16]
  • Incredibly strong, doing 30♥ × 15 damage, bringing players wearing full netherite armor from full health to 7♥♥♥♥ health points.
  • Has at least 84♥ × 42 health points, although it is estimated to have up to 100♥ × 50, putting it on par with the iron golem and ravager.[note 1]
  • A mob designed to be extremely difficult, and fled from.[17]
  • Has a way to counter the strategy of building up 3 blocks to avoid attacks.[18]
  • At least as fast as the player's walking speed.
    • Seems to use the energy of vibrations to move faster.
  • Seems to have knockback resistance.
  • The warden's chest has a glowing core that appears to brighten and dim in tandem with the ambient lighting of the deep dark cave biome.
    • The core creates a low throbbing sound as it pulses. The sound and animation seem to speed up rapidly when the warden notices a player.
  • Is about 3.2 blocks tall, making it one of the tallest mobs in the game, exceeding the iron golem and enderman in height and width (the same).[note 2][19][more information needed]

World generation[edit]

Archaeological excavation
  • A new semi-underground structure where archeological items and ceramic shards can be found.[verify]
Deep dark biome
  • New biome at the "deepest depths of the world".
  • Wardens can spawn here.
  • May contain candles.
  • Contains sculk blocks, and the new Sculk Sensor Blocks, a new block that responds to vibrations.
  • Contains a new Darkstone.[unofficial name]
Dripstone caves
  • A massive cave biome containing vast quantities of stalactites and stalagmites.
Lush caves
  • Generate below azalea trees.
  • Contains tall grass, glow berries, dripleaf plants, spore blossoms, moss blocks, moss blankets, clay blocks, azalea roots, and azalea saplings.
  • Can spawn axolotls.
Mesh caves
  • Seems to be possibly a large tunnel-like cave.
  • Not much is known about this biome yet, but it was confirmed on Twitter by Henrik Kniberg.[20]
  • Possibly contain "catacomb" style branching cave sections.
  • More extreme and smooth terrain.
  • Likely change to the generation of alternate stone types, to make them appear in larger but less numerous deposits.[21]
    • Possibly seen in a screenshot tweeted by Henrik Kniberg,[22] in which diorite appears to generate in a long and flat horizontal strip, rather than a small unevenly shaped patch.


  • The player can find items and blocks in gravel and dirt inside the dig site structure by using the brush.
  • Possible items shown in the preview footage include:
Dimming of light[unofficial name]
  • While in the deep dark cave biome, the ambient lighting occasionally dims temporarily, limiting the player's visibility. This serves as a warning that the warden is nearby.[23]
  • An action can cause vibrations in the air, which can be picked up by sculk sensors and wardens
  • Can be caused by walking (but bats?), block placing, block breaking, doors or trapdoors opening, chests of any kind opening, pistons activating, and projectiles such as snowballs, eggs, or arrows landing. This does not include ambient weather such as rain or snow [6]

Planned changes[edit]


  • Used to block a sculk sensor's ability to sense vibrations.
A picture of the local water levels in use forming an underground lake or ocean shown at Minecraft Live 2020.

World generation[edit]

  • Complete generation overhaul.
  • Many variations on cave types and cave design.
  • Biomes within caves introduced.
Local water levels
  • A new underground water level generation aspect has been introduced, which allows for certain areas of a world to generate with a specified water level different from that of another area (such as sea level).
  • Allows for the generation of larger underground lakes and connections to oceans.
  • Allows for the generation of many underground waterfalls.
  • Allows for underwater entrances.
Mineral veins
  • To be revamped, possibly to balance the generation of copper.
  • Some stone appears a little different and when that stone is mined, more of the ore should be found behind it.
Other Stones
  • Diorite and what appears to be tuff spawn in layers of rock in straight lines instead of splotches.
An example of how the other stones may generate

Unconfirmed features[edit]

These features are not confirmed for 1.17, but were mentioned or showcased by developers during the development of 1.17. Main article: Mentioned features.


Underground Cabin[unofficial name]
  • Seen in the Deep Dark biome during the Minecraft Live 2020 stream.[24]
  • Consists of a chamber with a cobblestone floor and stripped log support beams, containing 3 barrels, a blast furnace, and a large chest, with cobwebs and candles in and around it.
  • May possibly not be a generated structure, but instead a construction built for the purpose of the Warden showcase.


Height Limit

  • May be increased.[25]


  • Swedish painter John Bauer was one of the main inspirations behind the design and idea of the lush caves biome, specifically Bauer's 'Oskuldens Vandring' (Innocent's Journey) painting.
  • This is the first update to add a new ore to the overworld since emerald ore was added in 1.3.1 (12w21a) for Java Edition and v0.9.0 alpha for Bedrock Edition, in 2012 and 2014 respectively.
  • This is the first update to add a real-world metal into the game since Classic 0.0.14a in 2009 for Java Edition, which brought both iron and gold, and v0.3.0 alpha in 2012 for Bedrock Edition, which brought iron.
  • Although the axolotl is the first amphibian mob implemented into Minecraft, it was not the first announced one, since frogs were announced during the MINECON Live 2019 biome vote.
  • Despite ores being shown to emit light during the reveal of this update, this was later confirmed to be just for demonstration purposes, to give a much clearer vision for viewers, and not for the final version.
    • It was confirmed to be a placeholder for new, biome-specific light sources.[8]
  • The name "Sculk sensor" is derived from the word "skulk", meaning "keep out of sight, typically with a sinister or cowardly motive".[3]
  • Mojang employees explored real caves to research for the update. This helped give inspiration and ideas for the update, including for the mesh caves.[26][27]
  • Tinted Glass is the name of Stained glass in the April fool's joke Minecraft 2
  • As of Java Edition 1.17 (20w45a), Waxed Lightly Weathered Cut Copper Stairs is the longest item name in the game, with 41 characters.
  • Lava can be placed in a cauldron even if the cauldron is underwater.
  • The artstyle of the concept art for Caves & Cliffs was inspired by the concept art of Diamonds and Lemons, the Adventure Time episode featuring a Minecraft crossover.[29]


Screenshots of the Caves & Cliffs Update from Minecraft Live 2020 and other sources:

Concept artwork[edit]


  1. This health amount is only an estimate based on the amount of damage it was shown to survive during Minecraft Live 2020, and therefore is uncertain.
  2. Height of the Warden is based from the image found on twitter.


  1. a b "Minecraft Live 2020 @ 2:10:28"– Minecraft on YouTube, October 3, 2020
  2. a b c d "Minecraft Live: The Recap" –, October 3, 2020
  3. a b "While not related, Sculk name was inspired by Jeb's process with naming the Shulkers - he liked the word "Lurker", but changed it around a bit to feel new. Sculk is one letter changed of Skulk, meaning "keep out of sight, typically with a sinister or cowardly motive""@kingbdogz
  4. "That is actually a bone-like material, not End Stone :)" - @kingbdogz
  6. a b "Small interesting tidbit: We made the design decision for Sculk Sensors to not be affected by ambient weather like rain. My logic for this is "habituation", where the Sculk Sensor essentially becomes used to the constant stimulus, no longer registering it as a vibration"@kingbdogz
  7. "I think this could be a really unfun mechanic if rain can suddenly mess up your redstone contraptions. This is also why Sculk Sensors don't react to each other, nor the Warden, since they're so accustomed to vibrations of their "species" that it's background noise they block out"@kingbdogz
  8. a b "Once Upon a Time in the Underground (Minecraft cave prototype) @ 0:27"– Henrik Kniberg on YouTube, October 8, 2020
  9. "Note: Everything in the archeology vid was placeholder art"@JasperBoerstra
  10. "Feeling kinda short myself..."@kingbdogz
  11. "The other two will go back to the ideas pile. They might come in the future, they might never happen. Choose wisely!"@_Ulraf_, October 1, 2020
  12. "Wardens will still be able to detect entities that are invisible :)"@kingbdogz
  13. "I believe so, yes."@kingbdogz in response to "Will the skulk detect players that flying with elytra?(without rocket)"@TRnone12
  14. "Correct."@kingbdogz in response to "Does that mean the Warden will attack any mob that makes a vibration, not just the player?"@RealZombieManF
  15. "Bells make movement so you will ;)"@kingbdogz
  16. "Yes"@kingbdogz in response to "It will detect when you eat?"@Otto96680070
  17. "I'd actually consider it something entirely new. The Warden is a force of nature, not a boss. When a tornado is barreling toward you, you don't try to kill it - you run away! The Warden is exactly the same."@kingbdogz
  18. "It absolutely has some tricks up its sleeves to counter that particular strategy :)"@kingbdogz
  19. "Looking kinda short there, Iron Golem."@kingbdogz
  20. "Mesh caves. You'll see it later."@henrikkniberg
  21. "Lol been prototyping that today actually! Thx for the pic though very useful."@henrikkniberg
  22. "Sometimes weird things happen when messing around with world generation. The villagers up there look mighty confused :) #devbloopers"@henrikkniberg
  23. "The mechanical purpose is to warn you that the Warden is nearby. You should get ready if you start to see pure darkness like that..."@kingbdogz
  25. "We can say that we are looking into it, but we can unfortunately not promise anything at this point" - Agnes Larsson on "Ask Mojang: All About Caves & Cliffs @ 8:53"– Minecraft on YouTube, October 30, 2020
  26. "Yes, and yes. Was hoping to do a larger field trip to different countries with interesting caves, but covid got in the way so we had stay more local."@henrikkniberg, October 23, 2020
  27. "Mesh caves were inspired by this field trip."@henrikkniberg, October 21, 2020
  28. "I used to travel a lot in the past though (before becoming aware of climate change), and I like visiting caves, so I dug up memories from fascinating cave visits in Spain, South Africa, New Zealand, and British Virgin Isles and some other places."@henrikkniberg, October 23, 2020
  30. "My last tweet was probably not a teaser, but this one almost definitely is"@Cojomax99
  31. "Archy is just adding more GAMEPLAY to exploring these structures and uncovering ancient artifacts"@_Ulraf_, October 28, 2020