Crystal Cavern
Crystal Cavern is a location found northwest in Highlands, hidden under the mountain. Many stones block the enterance at first and must be removed with a pickaxe. The cavern is similar to Quarry Mine as it is just one large floor as opposed to multiple decending floors.
The cavern is filled with dangerous monsters but also has many foragables and an exclusive fishing area.
Forage
| Image | Name | Description |
|---|---|---|
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Void Root | Note: Only starts spawning once viewing and completing  Krobus's 10-Heart CutsceneA strange dark energy is emitting from it. |
Fish
The fishing area is located in the northwest corner of the cavern, and casting can prove difficult, similar to the Crimson Badlands, as enemies continue to attack while fishing.
However, there is a secret passage to a small outcropping that allows for fishing while being protected, except for Bats. This is also where mystic stones can possibly be found.
There is one exlcusive fish to this area: Gemfish which can be very valuable for selling, gifting, and even in a fish pond.
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6 | 7 | 8 | 9 | 10 | 11 | 12 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 1 | |
 Gemfish
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 Stonefish
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 Cave Jelly
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Mining
Minerals
Minerals spawn on the ground within the cavern like foragables that can be picked up and collected. With the Challenging Highland's Cavern configuration toggled on, less minerals will spawn each day.
| Image | Name | Description |
|---|---|---|
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Quartz | A clear crystal commonly found in caves and mines. |
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Earth Crystal | A resinous substance found near the surface. |
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Star Shards | No one knows how these form. Some scientists claim that the microscopic structure displays unnatural regularity. |
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Fairy Stone | An old miner's song suggests these are made from the bones of ancient fairies. |
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Helvite | It grows in a triangular column. |
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Kyanite | The geometric faces are as smooth as glass. |
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Bixite | A dark metallic Mineral sought after for its cubic structure. |
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Dolomite | It can occur in coral reefs, often near an underwater volcano. |
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Neptunite | A jet-black crystal that is unusually reflective. |
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Fluorapatite | Small amounts are found in human teeth. |
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Lemon Stone | Some claim the powdered crystal is a dwarvish delicacy. |
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Prismatic Shard | Note: There is a 1% that this spawns A very rare and powerful substance with unknown origins. |
Nodes
 Copper Node  Iron Node  Gold Node  Mystic Stone
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