Hellstone

The Underworld’s ash formations, including clusters near lava pools.

SEE WHERE TO GO

Maps & farm layouts

1 map

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A Nightmare or Deathbringer Pickaxe, or another pickaxe with sufficient mining power.
Obsidian Skin protection or a plan to avoid and contain released lava.
A Hellforge and Obsidian for processing.

Prepare Obsidian Skin protection if available, along with blocks or platforms for terrain control.
Enter the Underworld and look for ash formations with visible Hellstone.
Clear a small work area and confirm a route back to solid ground.
Mine exposed Hellstone with the required pickaxe while watching where lava flows.
Contain or avoid lava between clusters and keep the escape route open.
Return when your inventory is full or your protection is running low.
At a Hellforge, smelt Hellstone with Obsidian into bars and craft the planned item.

Approach from a stable side so released lava is less likely to pour directly onto you.
Bring blocks to make temporary platforms and close gaps on your route.

Repeat while accessible deposits remain. Each cluster is finite; search other ash formations after nearby veins are exhausted.

Mining beneath a lava pool; choose a position where released lava cannot fall directly onto you.
Taking a pickaxe without enough mining power; check your tool before traveling.
Forgetting Obsidian; bring it to make Hellstone bars.

Stop once you have enough bars for the intended item. Return when another specific craft needs Hellstone.

Sources & fact checks

Open a guide to find other locations and see what the item is used for.

Ores and crafting resources

Hellstone bars unlock useful pre-Hardmode equipment. Plan the Underworld trip around the lava released as you mine.