If you’ve spent hours grinding through pre-Hardmode Terraria trying to upgrade your gear for the Wall of Flesh fight, you’ve probably heard hellstone mentioned as the strongest material you can get before flipping the game to Hardmode. Figuring out how to get hellstone in Terraria isn’t as simple as mining regular stone or ore, though, since it’s tucked away in the game’s most dangerous biome and comes with a whole host of hidden risks. I’ve lost count of how many times I’ve fallen into lava or got swarmed by demons mid-mine on my first few playthroughs, so I put together this guide to help you skip the frustrating deaths and get the ore you need fast.
Prerequisites You Need Before You Learn How to Get Hellstone in Terraria
You can’t just head straight to the Underworld as a new spawn and expect to walk away with stacks of hellstone; you’ll need to hit a few key milestones first to avoid instant death. I recommend gathering all of these items before you even make your way down to the lava-filled biome, as backtracking halfway through a mining run wastes more time than you’d think:
- Nightmare Pickaxe (Corruption worlds) or Deathbringer Pickaxe (Crimson worlds): These are the lowest-tier pickaxes strong enough to mine hellstone, so you’ll need to defeat the Eater of Worlds or Brain of Cthulhu first to get the ore to craft them.
- At least 3 Obsidian Skin Potions per mining run: These grant 6 minutes of full lava and fire block immunity, so you won’t take damage standing on hellstone or falling into shallow lava pools.
- Pre-Hardmode combat gear with at least 20 defense: Demonite/Crimtane or Gold/Platinum armor works perfectly here, paired with a high-damage melee or ranged weapon to clear out Underworld enemies fast.
- Grappling hook and stack of 200+ building blocks: The grappling hook keeps you from falling into deep lava pits, while blocks let you build safe platforms to mine from and block enemy spawns where you’re working.
You don’t need to go overboard with fancy supplies for your first run, but skipping any of these core items will almost guarantee you end up respawning at your base with an empty inventory. If you don’t have access to Obsidian Skin Potions yet, you can brew them yourself with bottled water, fireblossom, obsidian, and waterleaf, or find them in chests scattered across the Underworld and underground biomes.
The Safest Path to Find and Mine Hellstone in the Underworld
Hellstone only spawns in the Underworld, the lowest biome in every Terraria map, so your first step is building a hellevator to reach it quickly. I always line my hellevators with solid blocks and place ropes every few blocks to make climbing back up faster, and I add torches every 10 blocks to stop enemies from spawning inside the shaft. Once you reach the Underworld, take 30 seconds to get your bearings before you start mining, so you don’t accidentally step off a ledge into a lava lake.
Look for large patches of hellstone that sit on solid ash blocks, rather than patches floating directly over deep lava, to minimize risk if your Obsidian Skin Potion runs out unexpectedly. Each hellstone block you mine will release a small burst of lava, so that immunity is non-negotiable for fast farming. If you’re only looking for a small amount of hellstone to craft a single weapon, you can usually find small patches near the edge of the Underworld without going too deep into dangerous areas.
Each hellstone bar requires 4 hellstone ore and 1 obsidian to craft at a Hellforge, so keep that ratio in mind when you’re mining. Don’t fill your entire inventory with hellstone ore and forget you need obsidian to turn it into usable bars. Hellforges spawn naturally in ruined Underworld houses, so you can pick one up with your pickaxe and take it back to your base if you don’t want to craft bars in the dangerous Underworld environment. I always grab an extra Hellforge on my first run, just in case I need one for a secondary base later on.
Common Mistakes to Avoid When Farming Hellstone
The biggest mistake I see new players make is heading to the Underworld with only one Obsidian Skin Potion. It’s easy to lose track of time while you’re mining, and if the effect runs out while you’re standing in lava or on a hellstone block, you’ll take huge damage before you can react. I set a timer on my phone for 5 minutes after I drink a potion, so I have a 1 minute warning to get to a safe spot before the immunity wears off.
Never dig straight down when you’re mining hellstone, even if you have Obsidian Skin active. You never know if there’s a deep lava pit or a spawned bone serpent right below the block you’re mining, and a surprise fall can still make you lose your ore if you die before you can climb out. I also recommend clearing all enemies within a 20 block radius of your mining spot before you start digging. Fire imps shoot fireballs that can knock you off your platform even if you’re immune to fire damage, and demons can swarm you fast if you don’t take them out immediately.
Another common mistake is carrying too much ore at once. If you die in the Underworld, 9 out of 10 times your dropped items will fall directly into lava and disappear forever. I keep a small storage chest in my Underworld entry platform to drop off ore every 10 minutes, so I never risk losing more than a few stacks if I die unexpectedly. If you’re playing in Master mode, bring twice as many healing potions as you think you need; Underworld enemies hit much harder in higher difficulty modes, and it’s not worth losing all your progress over a single missed heal.
Best Uses for Hellstone Once You’ve Farmed It
The most valuable use for hellstone by far is crafting Molten Armor, the strongest pre-Hardmode armor set in the game. It gives 25 base defense plus a 17% melee damage boost, which is exactly what you need to survive the Wall of Flesh fight and transition into Hardmode. You’ll need 45 hellstone bars to craft the full set, so plan your mining runs accordingly if you’re prioritizing armor first.
For non-melee builds, hellstone has plenty of other high-value uses. Ranged players can craft the Molten Fury bow, which turns regular wooden arrows into flaming fire arrows that deal extra damage over time. Summoner players can craft the Imp Staff, which summons a flying fire imp minion that fights for you automatically, one of the best pre-Hardmode summoner weapons in the game. You can also craft Hellfire Arrows with hellstone, which deal splash fire damage that’s perfect for crowd control during boss fights or event invasions.
I don’t recommend wasting hellstone on decorative blocks or low-tier tools unless you have way more than you need for your core gear. It’s one of the most time-consuming pre-Hardmode resources to farm, and you’ll regret wasting bars on trivial items when you realize you’re 10 bars short of the Molten Armor set right before your Wall of Flesh attempt. If you’re playing with friends, split up mining runs so you don’t all have to make separate trips to the Underworld; it cuts the total grind time in half, and you can share extra obsidian or ore with anyone who falls short.
At the end of the day, hellstone is one of the most rewarding pre-Hardmode resources you can farm, even with all the risks that come with heading down to the Underworld. Once you know how to get hellstone in Terraria, you can skip the silly deaths and frustrating grind, and get straight to crafting the gear you need to beat the Wall of Flesh and prepare for Hardmode. Take it slow, bring the right supplies, and don’t be afraid to head back to base early if you’re running low on potions or healing items. You’ll have a full set of Molten Gear before you know it.