Boulders are Salt's solution to mining. They vary in rarity, color and frequency. The big boulders cannot be mined.
Weak Boulder[]
The most common boulder is an black-colored one. When mined it may contain:
- Stone Block (always)
- Flintstone (common)
- Coal (uncommon)
- Rough Topaz (rare)
- Rough Ruby (very rare)
- Magnetic Stone (very rare)
- Rough Diamond (extremely rare)
Rich Boulder[]
It looks like a weak boulder but has a green-colored pattern and is rarer. It can contain the same things as weak boulders, plus:
- Hardstone Ore (common)
- Ironite Ore (semi-common)
- Silver Ore (rare)
- Rough Topaz (rare)
- Rough Diamond (rare)
Ironite Boulder[]
This boulder is often found on Battlemaster settlement islands.
- Ironite Ore (one or two)
- Silver Ore (rare)
- Obsidian Ore (rare)
- Magnetic Stone (uncommon)
- Rough Topaz (common)
- Rough Ruby (rare)
- Rough Diamond (very rare)
Cobalt Boulder[]
This is currently the rarest boulder in the game, found only on islands with Pirate Strongholds.
- Cobalt Ore (one)
- Flintstone (common)
- Silver Ore (common)
- Ironite Ore (rare)
- Rough Ruby (rare)
- Rough Diamond (rare)
Moonrock Boulder[]
These are found only at night on uninhabited islands and have a cyan-colored neon glow during the nighttime which makes these boulders easy to see. Note that these boulders do not glow if the moon is not out.
- Moonrock Ore Shard (one)
Volatile Boulder[]
These boulders exist only on desert Islands and usually contain 1 volatile ore per boulder. The player should be really careful when mining these boulders as they will explode when struck by a critical hit. The blast will be pretty harmful to a player without armor.
- Volatile Ore (one)
Finding special ores and materials[]
Some ores and materials can rarely be found when mining boulders with special pickaxes:
- Gold Ore (mining Weak/Rich boulders with the Gold Digger's Pickaxe)
- Obsidian Ore (mining Weak/Rich/Volatile boulders with the Blacksmith's Pickaxe)
- Ancient Shard (mining Weak/Rich boulders with the Pick of Crumbled Wardens)