Every Floor of the Mines: Rewards, Monsters & Survival Tips in Stardew Valley

The Mines in Stardew Valley are a 120-floor cavern northeast of the mountain lake, and they are where most of your early ore, weapons, and combat experience come from. The deeper you go, the better the rewards and the tougher the monsters, so it pays to understand how the descent is structured before you charge down with a pickaxe and a rusty sword.

Quick answer: how the Mines are laid out

The Mines have 120 floors split into three visual tiers of roughly 40 floors each. An elevator at the entrance unlocks a new stop every 5 floors you reach, so you never have to re-walk the whole shaft. Floor 120 holds the Skull Key, which unlocks the Skull Cavern in the desert.

Floors 1–39: the stone tier

The first stretch is the gentlest. Rocks here yield mostly Copper Ore and coal, which is exactly what you need for your first furnace upgrades and early tool improvements. Monsters are correspondingly mild: Green Slimes, Bugs, Grubs (which hatch into Cave Flies), Duggies that burst up from the floor, and Rock Crabs that hide inside fake rocks until you strike them.

This tier is the best place to grind early Mining and combat levels safely. Floors that are a multiple of 10 are reward floors with no monsters and a chest, and clearing them is how you bank elevator progress without much risk. Watch for ladders and shafts hidden under rocks and inside monster drops; shafts drop you down a floor instantly and take a little fall damage.

Floors 40–79: the ice tier

Past floor 40 the cavern turns to ice. Iron Ore becomes the dominant metal here, with coal still common, so this is where you stock up for steel-tier upgrades. The temperature shift brings new threats: Dust Sprites (small, fast, and a reliable source of coal), Skeletons that throw bones from a distance, Ghosts that drift through walls, and Bats that swarm in open caverns. Blue Slimes also appear in this colder stretch.

Dust Sprites are worth hunting specifically because of the coal they drop, which you will burn constantly in furnaces. The frozen floors are also where many players first feel the difficulty curve, so a ranged option and decent armor start to matter.

Floors 80–119: the lava tier

The final tier is lava and shadow. Gold Ore is the headline resource down here, and the occasional Iridium Ore node begins to appear (though iridium is far more common later in the Skull Cavern). Expect the hardest regular monsters in the Mines: Lava Crabs encased in obsidian-like shells, Shadow Brutes and Shadow Shamans that hit hard and can heal nearby enemies, Squid Kids that lob projectiles, and persistent Bats.

Lava floors often feature gaps and molten pools, so movement and positioning matter as much as raw damage. Bringing food that boosts attack or defense makes a real difference across this stretch.

Reaching floor 120 and the Skull Key

Floor 120 is the bottom of the Mines and a reward floor with no monsters. The chest there contains the Skull Key, which opens the locked door in the desert cave to access the Skull Cavern — an endlessly deep, much harder mine where iridium becomes plentiful. Reaching floor 120 is a milestone that effectively graduates you from the Mines into endgame mining.

Because the elevator records every fifth floor you reach, you do not have to descend all 120 floors in one trip. Push as far as you safely can, let the elevator save your deepest stop, and resume from there next time.

Gear and food to bring

A few practical loadout notes for a smooth descent:

• Weapon: upgrade your starter sword as soon as you can afford a better blade from the Adventurer’s Guild; reach matters against Skeletons and Bats.
• Pickaxe: a higher-tier pickaxe breaks ore nodes in fewer hits, saving energy on deep runs.
• Food: carry healing food and, for the lava tier, dishes that buff attack or defense. Coffee or anything that boosts speed helps you cover open floors and dodge swarms.
• Bombs: useful for clearing rock-dense floors fast and exposing ladders.
• Rings and boots: defensive footwear and combat rings reduce the damage spikes on the deeper tiers.

Survival tips for descending safely

• Mind the clock and your energy. Passing out underground or at 2 AM costs you, so plan your turnaround before you run dry.
• Use reward floors as checkpoints. Multiples of 10 are safe and bank elevator progress; they are good places to regroup.
• Don’t tunnel past unopened nodes. Copper, iron, and gold each peak in their own tier, so farm the ore you need at the right depth instead of rushing.
• Keep ranged pressure for ice and lava floors. Skeletons, Shadow Shamans, and Squid Kids punish players who only swing melee.
• Retreat via the elevator, not the long climb. Once a stop is saved, you can leave and return without re-clearing floors.

Explore the mines together

The Mines are even more fun with a friend covering your back while you mine. If you want a persistent world your group can dive into any time, a Stardew Valley server from XGamingServer keeps the farm and the cavern running between sessions, and our documentation walks through getting everyone connected.

Frequently asked questions

How many floors do the Mines have?

The Mines have 120 floors. Floor 120 is the bottom and holds the Skull Key chest.

How does the elevator work?

The elevator at the mine entrance gains a new stop for every fifth floor you reach. After unlocking a stop, you can travel straight to that floor on future visits instead of descending from the top.

Which ores are found at which depth?

Copper is most common in the stone tier (floors 1–39), Iron in the ice tier (floors 40–79), and Gold in the lava tier (floors 80–119). Coal appears throughout, and rare Iridium begins to show up on the deepest lava floors.

What monsters appear in each tier?

Early stone floors have Green Slimes, Bugs, Grubs, Cave Flies, Duggies, and Rock Crabs. Ice floors add Dust Sprites, Skeletons, Ghosts, and Bats. Lava floors feature Lava Crabs, Shadow Brutes, Shadow Shamans, Squid Kids, and Bats.

What is the Skull Key for?

The Skull Key, found on floor 120, unlocks the door to the Skull Cavern in the desert — a far deeper and more dangerous mine where iridium is plentiful.