Crystal Hollows

Crystal Hollows
This image shows a randomly generated Crystal Hollows.
Type	Mining location
Level	Heart of the Mountain IV
Sub-locations	Jungle Jungle Temple Mithril Deposits Mines of Divan Goblin Holdout Goblin Queen's Den Precursor Remnants Lost Precursor City Crystal Nucleus Magma Fields Khazad-dûm Fairy Grotto Dragon's Lair
Location
← Previous Location	Dwarven Mines
Next Location →	None
Inhabitants
NPCs	Odawa King Yolkar Professor Robot Kalhuiki Door Guardian Keeper of Lapis Keeper of Gold Keeper of Diamond Keeper of Emerald Geonathan Greatforge Sludge Xalx Pete Keith Ede Chunk Forger Gemma
NPCs	Odawa King Yolkar Professor Robot Kalhuiki Door Guardian Keeper of Lapis Keeper of Gold Keeper of Diamond Keeper of Emerald Geonathan Greatforge Sludge Xalx Pete Keith Ede Chunk Forger Gemma
Mobs	Kalhuiki Youngling Kalhuiki Tribe Member Kalhuiki Elder Sludge Key Guardian Butterfly Yog Blaze Bal Scatha Worm Automaton Grunt Executive Sebastian Executive Wendy Executive Viper Corleone Thyst Sneaky Creeper Lapis Zombie Redstone Pigman Emerald Slime Miner Zombie Miner Skeleton Goblins Water Worm Poisoned Water Worm Flaming Worm Abyssal Miner Lava Blaze Lava Pigman
Mobs	Kalhuiki Youngling Kalhuiki Tribe Member Kalhuiki Elder Sludge Key Guardian Butterfly Yog Blaze Bal Scatha Worm Automaton Grunt Executive Sebastian Executive Wendy Executive Viper Corleone Thyst Sneaky Creeper Lapis Zombie Redstone Pigman Emerald Slime Miner Zombie Miner Skeleton Goblins Water Worm Poisoned Water Worm Flaming Worm Abyssal Miner Lava Blaze Lava Pigman
Resources
Mob Drops	Gemstone  Yoggie  Sludge Juice  Jungle Key  Automaton Parts  Treasurite  Corleonite  Bal Pet  Scatha Pet  Goblin Egg  Blaze Rod  Gunpowder  Rotten Flesh  Gold Nugget  Slimeball  Lapis Armor  Lapis Crystal  Miner Armor  Exp Share Core  Eternal Flame Ring  Worm Membrane  Magma Core
Mob Drops	Gemstone  Yoggie  Sludge Juice  Jungle Key  Automaton Parts  Treasurite  Corleonite  Bal Pet  Scatha Pet  Goblin Egg  Blaze Rod  Gunpowder  Rotten Flesh  Gold Nugget  Slimeball  Lapis Armor  Lapis Crystal  Miner Armor  Exp Share Core  Eternal Flame Ring  Worm Membrane  Magma Core
Resources	Cobblestone  Coal  Iron Ingot  Gold Ingot  Lapis Lazuli  Redstone  Emerald  Diamond  Hard Stone  Mithril  Titanium  Dirt  Gemstone  Gemstone Powder  Oil Barrel  Golden Dragon Egg  Pickonimbus 2000  Divan Fragment  Helix  Bob-omb  Treasurite  Jaderald  Prehistoric Egg  Oil Barrel  Divan's Alloy  Recall Potion  Ascension Rope  Wishing Compass  Mysterious Meat
Resources	Cobblestone  Coal  Iron Ingot  Gold Ingot  Lapis Lazuli  Redstone  Emerald  Diamond  Hard Stone  Mithril  Titanium  Dirt  Gemstone  Gemstone Powder  Oil Barrel  Golden Dragon Egg  Pickonimbus 2000  Divan Fragment  Helix  Bob-omb  Treasurite  Jaderald  Prehistoric Egg  Oil Barrel  Divan's Alloy  Recall Potion  Ascension Rope  Wishing Compass  Mysterious Meat

The Crystal Hollows is a randomly-generated Mining area. It is the primary source of Gemstones.

Mechanics

The Crystal Hollows is a mining area from  202, 31, 202 to  823, 188, 823, enclosing an area of 621 x 157 x 621. Bedrock walls enclose the mineable area. This area is partially randomly generated; only the Structures within the cave are randomly generated, with the exception of Crystal Nucleus. The cave tunnels are not randomly generated and are the same across all servers.

In order to access the Crystal Hollows, the player must obtain a Crystal Hollows Pass. It can be bought for 10,000 coins from Gwendolyn in the ⏣ Dwarven Mines, or obtained as a reward from completing their offer in ⏣ The Garden. However, upon completing Dulin's quest, which requires Heart of the Mountain 7, the cost of the Crystal Hollows pass becomes free.

The pass grants access for 6 hours, which continues counting down even when not in the Crystal Hollows. When the pass is about to expire (1 minute before), it can be renewed by clicking the chat message.

Once the pass is purchased, the Hollows can be entered via the Minecart next to Gwendolyn or the Minecart icon in the SkyBlock Menu.

Crystal Hollows lobbies are open for a limited time before they reset and generate new tunnels. Somewhere between the 17th and 19th day (about 6 real-life hours), the lobby will close, meaning new people aren't able to join that lobby when entering the Crystal Hollows. Even people who are already in the lobby are no longer able to warp people in from outside. The exact time the lobby closes to warps varies slightly each time. Once there are fewer than 4 people left in the lobby, it will reset with a cave-in.

The following messages appear when the lobby is about to cave in:

Time Left	Message
60 seconds	You can hear mighty rumbles and explosions in the distance...
40 seconds	The ground around you starts to wobble and crack...
30 seconds	You notice the ceiling starting to give way...

A few moments later, the server restarts and all players get kicked out and sent to Gwendolyn in the Dwarven Mines.

Mining

Inside the Crystal Hollows, blocks that are mined do not get replaced by Bedrock, and are instead removed, similar to vanilla Minecraft mining. Blocks can be placed in most areas of the Crystal Hollows. Ores that require a furnace do not require Smelting Touch to be obtained.

Stone is replaced by Hard Stone within the Hollows, which is harder to break than Stone. Gemstones, Mithril, and vanilla ores spawn within the Hard Stone.

Yields from most vanilla ores are increased within the Crystal Hollows.

Ore Yields

Icon	Ore	Base Yield
	Coal Ore	4x Coal
	Lapis Lazuli Ore	9x Lapis Lazuli
	Redstone Ore	22x Redstone
	Emerald Ore	4x Emerald
	Diamond Ore	4x Diamond

Treasure and Loot Chests

Upon mining blocks, there is a small chance to spawn a treasure chest, containing various rewards. These chests can spawn anywhere except near the bedrock wall. The player must aim at the critical particles on the face of the chests 5 times in a row in order to open a chest. These treasure chests spawned from mining will only last for around 1 minute before disappearing.

Loot chests on the other hand can spawn in set locations within structures; these chests can be opened directly with a small time delay and contain about twice the gemstones and powder of what a treasure chest gives on average.

The loot within such a certain structure chest is always the same for all players who open it within that Crystal Hollows instance. However, the amount of Mithril and Gemstone Powder within each slot of the chest varies between players. Chests from mining do not share this property.

Treasure and Loot chests will only contain the loot found within the area. For example, Magma Fields chests might contain  Yoggie,  Topaz or  Ruby.

Treasure and Loot chests have a 5% chance to be a rare loot chest, which can contain better drops. If the chest is not a rare loot chest, it will contain common loot.

The possible loot is listed below, as well as the chance of the item being rolled as a drop from chests. 3-6 drops are rolled per chest.

Possible Loot

For Loot from  Metal Detector, see Metal Detector § Drops.

• Jungle
• Goblin Holdout
• Mithril Deposits
• Precursor Remnants
• Magma Fields
• Fairy Grotto
• Crystal Hollows

Structures

Main article: Crystal Hollows/Special Locations

Each part of the Crystal Hollows has its own main special location, excluding Magma Fields, which will almost always generate in every lobby:

• The Jungle Temple generated in the Jungle
• The Mines of Divan generated in the Mithril Deposits
• The Goblin Queen's Den generated in the Goblin Holdout
• The Lost Precursor City generated in the Precursor Remnants
• 3 Fairy Grottos generated anywhere within the Crystal Hollows

Each of these structures house their respective Crystal. A special task must be completed to obtain the Crystal.

Khazad-dûm is the one location that can spawn in any part of the Crystal Hollows, making it harder to find.

There are also smaller structures which generate in random locations. Examples include:

• A structure which resembles the Deep Caverns, including the lift and the layered structure of the original Deep Caverns island
• A dragon skull from the Spider's Den
• A replica of the Dark Auction
• A miniature version of The Forge including a working forge NPC
• A copy of the pre-Hub overhaul Tavern

A full list of Structures can be found at Crystal Hollows/Special Locations.

Certain structures contain loot chests. Loot chests always generate in the same positions within the structures, similar to Dungeon Secrets. Loot Chests also generate the same items for every player, meaning if a player finds a chest with good loot such as a lot of Gemstone Powder or a Blue Goblin Egg, they can send the coordinates to chat to lead others to the chest.

Trivia

• The Crystal Hollows are internally referred to as the Greater Mines in the SkyBlock API.
• The Crystal Hollows are the only place  Dirt,  Andesite,  Diorite, and  Granite (and other blocks) can be mined, however, only  Dirt drops itself and all others drop  Hard Stone instead.
• Ores within a few blocks of the  Bedrock border may not get auto-smelted without Smelting Touch.
• Attempting to get into the Crystal Hollows using an  Ender Pearl will result in the player being teleported out with the following message, even if they do have a valid Crystal Hollows Pass:

  You have been teleported out of the Crystal Hollows because you did not have a valid pass!

• A player cannot claim rewards from the same loot chest on multiple profiles.

History

Alpha Hypixel Network
June 30, 2021	AHN 0.12 Round 1	Added Crystal Hollows.
Unknown Date		Changed size of the Crystal Hollows from 1024 x 256 x 1024 to 621 x 157 x 621.
Unknown Date		Fixed all Polished Diorite blocks within the Crystal Hollows counting as Titanium and regenerating.
Aug 20, 2024		Increased entry requirement from Heart of the Mountain Tier III -> IV.
		Removed ᠅ Mithril Powder from Crystal Hollows treasure and loot chests.
SkyBlock Prototype
July 14, 2021	0.12	Added Crystal Hollows.
July 20, 2021		Updated Hollows map to improve navigation slightly.
		Removed Ruby Skull Matching Puzzle room.
		Fixed not being able to fish up certain Crystal Hollows sea creatures.
July 22, 2021		Updated Jungle Temple to make the parkour easier.
July 27, 2021		Added a 5 minute spawn protection area around entrances.
		2 Fairy Grottos will spawn per lobby rather than 1.
		Improved warping to and from the Crystal Hollows.
		Improved pass checks.
		Reduced Powder amounts from loot chests.
		Fixed loot chest spawning in some rooms.
		Updated some rooms with context clues and spacing.
Aug 24, 2021		Added background soundtrack.
Unknown Date		Extended the duration of the Crystal Hollows pass to 5 hours.
Nov 8, 2021		Newer Crystal Hollows servers will now be prioritised when entering the Crystal Hollows.
		The Crystal Hollows now remains open for 5 hours, or 15 in-game days (from 2 hours, or 6 in-game days).
		3 Fairy Grottos now spawn per lobby rather than 2.
		When the player enters the Crystal Hollows via a warp (not the Minecart track) it will now put them at a random entrance.
Apr 9, 2022		Disabled Loot Chests.
Apr 13, 2022		Re-enabled Loot Chests.
		Loot Chests now immediately give the loot after opening rather than opening a Chest GUI.
Feb 14, 2023	0.18	Extended the duration of the Crystal Hollows pass to 6 hours.
June 26, 2023		Added a cooldown to some warning messages in Crystal Hollows.
		Fixed always respawning at the same entrance in Crystal Hollows when dying.
Sep 17, 2024	0.20.6	Increased entry requirement from Heart of the Mountain Tier III -> IV.
		Removed ᠅ Mithril Powder from Crystal Hollows treasure and loot chests.