This guide is a simplified overview of all changes in the Caves and Cliffs update (Java Edition 1.17.x releases), which assumes at least some familiarity with the Nether Update (Java Edition 1.16.x releases).
Name
Image
Habitat
Drops
Note
Axolotl
TBA
TBA
Changed [ edit ]
Name
Image
Changed
Shulker
If a shulker is hit by another shulker's projectile, it now has a chance of spawning a new shulker.
Name
Image
Obtaining
Tool Required
Uses
Amethyst Cluster
Grows on top of Budding Amethyst Blocks.
Fully Grown Amethyst Clusters drop Amethyst Shards.
Pickaxe (Iron or better)
Block of Amethyst
Generates inside of Amethyst Geodes.
Pickaxe (Iron or better)
Budding Amethyst
Generates inside of Amethyst Geodes.
Cannot be obtained.
Pickaxe (drops nothing)
Calcite
Generates in the middle layer of Amethyst Geodes.
Pickaxe
Tuff
Generates on the outer layer of Amethyst Geodes.
Pickaxe
Copper Ore
Found in the Overworld from Y=4 to Y=63.
Pickaxe (Stone or better)
Copper Block
Pickaxe (Stone or better)
Used for decoration.
Advances to the next stage of Weathering every 50-82 In game days.
Can crafted together with Honeycomb to become waxed, which will stop it from weathering.
Cut Copper
Pickaxe (Stone or better)
Used for decoration.
Advances to the next stage of Weathering every 50-82 In game days.
Can crafted together with Honeycomb to become waxed, which will stop it from weathering.
Cut Copper Stairs
Pickaxe (Stone or better)
Used for decoration.
Advances to the next stage of Weathering every 50-82 In game days.
Can crafted together with Honeycomb to become waxed, which will stop it from weathering.
Cut Copper Slab
Pickaxe (Stone or better)
Used for decoration.
Advances to the next stage of Weathering every 50-82 In game days.
Can crafted together with Honeycomb to become waxed, which will stop it from weathering.
Lightning Rod
Pickaxe (Stone or better)
Used to absorb/attract lightning , possibly to avoid fires or for use in farms.
Tinted Glass
Any
Glass that doesn't allow light to pass through.
Candle
Any
Can be used as a light source but it needs to be lit with flint and steel.
Can be placed in groups of four
Can be placed on top of a cake to make a candle cake.
Powder Snow
Can be placed using a Powder Snow Bucket.
Shovel
Mobs and players will sink into it and take freezing damage.
Dripstone Block
Pickaxe
Pointed Dripstone
Generates in dripstone cave biomes.
Any
Pointed Dripstone Stalagmites deal damage to any entity that falls or jumps on top of it.
Pointed Dripstone Stalactites fall when the block above it is broken, dealing damage to any entity it hits.
Pointed Dripstone Stalactites drip water, or lava if a lava is above the Stalactite. These drips will slowly fill up cauldrons with either water or lava.
Pointed Dripstone can be broken with Tridents.
Sculk Sensor
Hoe
Detects vibrations made from nearby entites or blocks and emits a redstone signal.
Can only detect certain things, such as entites walking or flapping or blocks being placed or broken.
Will not detect vibrations made behind a block of wool .
Changed [ edit ]
Name
Image
Changed
Cake
Can now have candles placed on them.
Cauldron
Can now be filled with lava and powder snow.
Dirt Path
Can now be created from dirt, coarse dirt, podzol and mycelium.
Renamed from Grass Path
All Rails
Name
Image
Obtaining
Uses
Amethyst Shard
Obtained by breaking fully grown Amethyst Clusters.
Can be used to create Spyglasses and Tinted Glass.
Four Amethyst Shards can create an Amethyst Block
Bundle
Can be used to carry a stack's worth of items in one slot of the player's inventory.
Copper Ingot
Can be used to create Copper Blocks, Lightning Rods
Can also be used to create the Spyglass.
Spyglass
When used it zooms in, which allows the user to see long distances.
Powder Snow Bucket
Obtained by using a bucket on a snow cauldron.
Can be used to place Powder Snow.
Bucket of Axolotl
Obtained by using a bucket on an Axolotl.
Can be used to spawn an Axolotl.
Spawn Eggs for all new mobs
Obtained from the creative inventory.
Can be used to spawn the corresponding mob.
Changed [ edit ]
Name
Image
Changed
Clock
Has been given a new Texture.
Compass
Has been given a new Texture.
Structures [ edit ]
Name
Image
Generates
Chests
Mobs
Description
Amethyst Geode
A round chamber consisting of an amethyst and budding amethyst inner wall, a tuff outer wall, and a layer of calcite in between.
Dripstone Cluster
A large vertical cluster of dripstone blocks.
Name
Image
Description
Structures
Dripstone caves
Does not generate in normal worlds, it is only available in buffet worlds with "Single Biome" and "Dripstone caves" enabled.
Contains lots of dripstone blocks and pointed dripstone on the floor and ceiling.
There are large columns made of dripstone blocks extending from the ceiling to the floor of the cave.
Also contains many pools of water .