Boulder

Boulder
Tool Required
Resources
Renewable?	No
Common Biomes	Savanna, Rockyland
DebugSpawn	"rock1"

Gold Vein
Tool Required
Resources
Renewable?	No
Common Biomes	Forest, Rockyland
DebugSpawn	"rock2"

Flintless
Tool Required
Resources
Renewable?	No
Common Biomes	Rockyland
DebugSpawn	"rock_flintless"

Charcoal
Tool Required
Resources
Renewable?	No
Common Biomes	Volcano
DebugSpawn	rock_charcoal

Obsidian
Tool Required
Resources
Renewable?	Yes
Common Biomes	Volcano
DebugSpawn	rock_obsidian

Moonrock
Tool Required
Resources
Renewable?	Yes
Common Biomes	Rockyland
DebugSpawn	"rock_moon"

Petrified Evergreen
Tool Required
Resources
Renewable?	Yes(Is created out of Evergreens)
Common Biomes	Forest Grassland
DebugSpawn	"rock_petrified_tree(_short/med/tall/old)"

“It wouldn't fit in my pocket.”

–Wilson

“It's, like, a rock.”

–Willow

“Is hard! Like me!”

–Wolfgang

“Even that is not permanent.”

–Wendy

“LUMPY.”

–WX-78

“A large sedimentary rock.”

–Wickerbottom

“I could break it down if I tried hard enough.”

–Woodie

“It's a rock.”

–Maxwell

“Smash!”

–Wigfrid

“We'll need to mine it before we can use it.”

–Webber

“I like you much better on land.”

–Walani

“Don't you go rolling off on me.”

–Warly

“Would wreck a hull.”

–Woodlegs

Boulders are large rocks commonly found in Savannas and Rockylands, although they may appear anywhere in the world. Their main purpose is to provide Rocks when mined, which can be used to build a number of objects/structures. A single Boulder will drop 3-5 Rocks. Additionally, Boulders may also provide Flint, Gold Nuggets, and Nitre. Boulders do not respawn; however, Rocks, Flint, Gold Nuggets, and Nitre are renewable resources because they can be found after Earthquakes while underground.

Mining

Boulders can be mined using the Pickaxe, Opulent Pickaxe, or Pick/Axe. To do this, click the tool on the Boulder or equip it from the inventory by right-clicking. Once the character has begun to swing the tool at the Boulder, either the LMB or Spacebar must be held or continuously clicked to continue mining.

It takes 6 strikes to mine a Boulder with a Pickaxe and Opulent Pickaxe, and 5 with the Pick/Axe. It depletes a normal Pickaxe's durability by 18%, Opulent Pickaxe's by 4.5%, and Pick/Axe's by 4%.

Resources

There are three types of Boulders that each have different loot. Boulder types are not shown on the map, (except for the Flintless one).

Smooth	Gold Vein	Flintless
×3 ×1.6 (1 + 60% to get 1 extra) ×1.25 (1 + 25% to get 1 extra)	×3 ×1.6 (1 + 60% to get 1 extra) ×1.25 (1 + 25% to get 1 extra)	×4.6 (4 + 60% to get 1 extra)
DebugSpawn "rock1"	DebugSpawn "rock2"	DebugSpawn "rock_flintless"

Don't Starve Together

In Don't Starve Together, a new type of Boulder has a rare chance to drop during a Meteor Shower. It can be mined to yield 1 Rocks, 1 Flint, and 1.9 Moon Rock (60% to get 1 extra + 30% to get 1 extra).

Also, Evergreens may petrify after an unknown period of time, followed by an announcement from the character. Petrified Trees are mined instead of being chopped, and may result in Rocks, Nitre and Flint.

Moonrock	Petrified Evergreen
×1 ×1 ×1.9 (1 + 60% to get 1 extra + 30% to get 1 extra)	Resource Short Normal Tall Old ×1.35 ×1.75 ×2.35 ×0.50 ×0.25 ×0.25 ×0.75 ×0.75 ×0.25 ×0.40 ×0.65 ×0.25
DebugSpawn "rock_moon"	DebugSpawn "petrified_tree"

Shipwrecked

In Shipwrecked, 2 new types of boulders were added, both found on Volcano. The Obsidian Boulder cannot be mined/destroyed via Pickaxe, but can be destroyed with Explosives. Obsidian Boulder is also the only boulder type that respawns(other than Moon Rock Boulders).

Obsidian	Charcoal
×2-5 (2 + 50% chance to get one extra + 2×25% chance to get one extra)	×2-5 (2 + 50% chance to get one extra + 2×25% chance to get one extra) ×0.5 (50% chance to get one)
DebugSpawn "rock_obsidian"	DebugSpawn "rock_charcoal"

Gallery

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  Boulder mining stages (variation 1).

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  Boulder mining stages (variation 2).

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  Boulder mining stages (variation 3).

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  Three smooth Boulders, two of which are darker gray.

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  A Set Piece featuring numerous Boulders, along with Tallbirds and Tallbird Nests.

• 

  Rockyland biome on a Map which has many Boulders.

• 

  Two different Boulder icons: smooth and flintless.

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  Gold-veined, smooth, and flintless Boulders surrounded by Hound Mounds in a Set Piece from the Reign of Giants DLC.

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  The Moonrock Boulder that can drop during a meteor shower in Don't Starve Together.

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  Moonrock Boulder mining stage 1.

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  Moonrock Boulder mining stage 2.

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  Moonrock Boulder mining stage 3.

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  Charcoal Rock stage variations.

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  Petrified Evergreens.

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  A misplaced boulder.

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  The growth stages of Petrified Evergreens.