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  1. Guide Annex
  2. Stardew Valley
  3. Mastery

Mastery Cave

Updated Mastery

A cave in Cindersap Forest in Stardew Valley 1.6.x. It opens when every skill is level 10. Since 1.6.6, farming mastery XP counts at half.

Straight answers

Which mastery helps a legendary fish?

Fishing Mastery gives an Advanced Iridium Rod with two tackle slots, the Challenge Bait recipe, and Golden Fishing Treasure Chests. Willy sells extra rods for 25,000g after 1.6.9. Blessing of Waters is the Farming statue. For the first three fish you hook that day, legendary difficulty drops 25% and the progress bar falls 50% slower. One Trap Bobber makes that 67% slower, and two make it 75%.

How do mastery points add up?

Only experience gained after all five skills are level 10 counts. Since 1.6.6, farming counts at half and foraging, mining, fishing, and combat count in full. Experience from before 1.6 does not convert. The claims cost 10,000, then 15,000, 20,000, 25,000, and 30,000. Any pillar can be first.

Five skills at level 10

The Mastery Cave is in Cindersap Forest. It opens the moment the fifth skill hits level 10. You do not have to sleep first. Walk up early and the door says how many skills are already at 10, out of 5. If you skip the cave that day, the next morning says a new way is open.

Grandpa's letter is in the southeast corner. A pedestal in the middle tracks mastery. Five pillars on the back wall are the five masteries. You can read a pillar before you buy it. Claim them in any order. Points pool together, so farming XP can pay for the fishing pillar.

Mastery points are skill experience gained after every skill is already level 10. Experience from before 1.6 does not convert, even if you were past level 10.

Mastery Cave, Stardew Valley Wiki, read 2026-11-04

As of 1.6.6, farming experience counts at 50%. Foraging, mining, fishing, and combat count at 100%. 1.6.4 had briefly set every skill to 50%.

Mastery Cave, Stardew Valley Wiki, read 2026-11-04

What the points buy

Each claim costs more than the one before it. You can sit on the points and buy all five at once. After the fifth claim, candles light, Grandpa's letter is gone, and a hat appears on the pedestal. Claimed masteries show on the Special Items & Powers tab.

Mastery point costs
ClaimPointsRunning total
1st10,00010,000
2nd15,00025,000
3rd20,00045,000
4th25,00070,000
5th30,000100,000

Mastery Cave, Stardew Valley Wiki, read 2026-11-04

The five pillars

Mastery rewards
MasteryRewards
FarmingIridium Scythe, Statue of Blessings recipe, and Golden Animal Crackers. A cracker permanently doubles that animal's produce. It does not work on pigs.
MiningStatue of the Dwarf King recipe, Heavy Furnace recipe, and double gems from gem-bearing rocks.
ForagingMystic Tree Seed recipe, Treasure Totem recipe, and Golden Mystery Boxes.
FishingAdvanced Iridium Rod, Challenge Bait recipe, and Golden Fishing Treasure Chests.
CombatAnvil recipe, Mini-Forge recipe, and a trinket slot. Trinkets drop while adventuring.

Mastery Cave, Stardew Valley Wiki, read 2026-11-04

Fishing Mastery

Fishing Mastery gives one Advanced Iridium Rod. It holds bait and two tackles. Willy sells another copy for 25,000g after 1.6.9.

The same claim teaches Challenge Bait. A perfect catch keeps three fish. Each time the fish leaves the bar, one is lost, and the third leave loses the catch. The recipe is 5 Bone Fragments and 2 Moss for 5 bait. The legendary fish page has the rod, the Trap Bobber, and the Cork Bobber rates.

Blessing of Waters is not on this pillar. It is the Farming statue in the next section.

The Advanced Iridium Rod is the Fishing Mastery reward. Extra copies are 25,000g at Willy's Fish Shop after 1.6.9.

Advanced Iridium Rod

1.6.9 added legendary fish ponds, one fish each, and put the Advanced Iridium Rod in Willy's shop.

Stardew Valley 1.6.9 changelog, read 2026-11-06

Farming Mastery

The Iridium Scythe harvests crops on tilled soil, crops in garden pots, spring onions, and forage grown from wild seeds. The swing is larger than the golden scythe. Hay from grass is 100%, up from 75%. Damage is 20, up from 13.

1.6.9 fixed forage crops cut with this scythe: they give XP, and the forage level can raise their quality. The same update fixed forage crops from garden pots that stayed low quality and gave no XP.

The Statue of Blessings is 999 sap, 999 fiber, 999 stone, and 333 moss. Touch it once a day. In multiplayer, only a player who claimed Farming Mastery can use it. The blessing is chosen when the day starts. Another statue, or restarting the day, gives the same blessing. Energy, Fangs, Friendship, Speed, and Luck last the whole day. Waters covers three fish. Butterfly sends you after one prismatic butterfly.

1.6.9 fixed the Iridium Scythe on forage crops so the cut gives XP and can use the forage quality boost. Garden-pot forage crops were also stuck at low quality with no XP.

Stardew Valley 1.6.9 changelog, read 2026-11-06

The Iridium Scythe is the Farming Mastery tool: a larger swing than the golden scythe, 100% hay instead of 75%, and 20 damage instead of 13.

Iridium Scythe, read 2026-11-06

A Golden Animal Cracker permanently doubles that animal's produce on its normal schedule. It does not work on pigs, and it does not speed the schedule. Baby animals can take one and double produce once they grow up.

Golden Animal Cracker, read 2026-11-06

One cracker can go in a fish pond. The basket turns gold. A second cracker does nothing. Selling the animal destroys the cracker. Emptying the pond with the empty option, or demolishing the pond, destroys it too.

Golden Animal Cracker, read 2026-11-06

After Farming Mastery, cracker finds are 7% of regular fishing treasure chests, 9% of golden fishing chests, 2% of Skull Cavern treasure rooms, and 0.5% of golden mystery boxes. Sell price is 1,000g.

Golden Animal Cracker, read 2026-11-06

1.6.9 stopped a cracked fish pond from producing unlimited output, and stopped a pond from taking more than one cracker before the first one landed.

Stardew Valley 1.6.9 changelog, read 2026-11-06

Statue of Blessings
BlessingEffect
ButterflyA prismatic butterfly somewhere in the valley. Gold is 0.5% of total earnings so far, at least 100g and at most 50,000g. It can also drop a Prismatic Shard at about 0.05 plus daily luck. No butterfly in rain or on a festival. None spawn after 3pm, or after 5pm in winter. In multiplayer each player gets a separate butterfly.
EnergyYou cannot lose energy. If you are already down when you touch the statue, energy stays at that level.
Fangs+10% critical hit chance, added to your other crit chance.
FriendshipTalking gives 60 friendship points instead of 20.
Speed+0.5 speed. It stacks with other speed buffs.
WatersThe first three fish you hook. Legendary difficulty drops 25%. Difficulty of other fish, except Carp, drops 50%. The progress bar falls 50% slower, 67% with one Trap Bobber, and 75% with two. An escaped fish still uses a charge. Challenge Bait or Wild Bait multi-catch counts as one fish. Algae, jelly, seaweed, and trash do not count.
Luck+1 luck. It stacks with other luck buffs.

Statue Of Blessings, read 2026-11-06

Mining Mastery

The Statue of the Dwarf King costs 20 iridium bars. Each day it offers two of the five powers. You pick one. The pair is set when the day starts, so a second statue or a restart does not change the offer. The power lasts the rest of the day.

The Heavy Furnace recipe is 2 furnaces, 3 iron bars, and 50 stone. Every run takes 3 coal, including a bouquet. Ore runs take 25 ore. Quartz runs take 5 quartz or 5 fire quartz. Ore output is 5 or 6 bars, each equally likely. Against a normal furnace that is about 9% less ore and about 45% less coal. It was added in 1.6.

Heavy Furnace times: bouquet 10 minutes or less for one wilted bouquet; copper 30 minutes; quartz and fire quartz 1 hour 30 minutes; iron 2 hours; gold 5 hours; iridium 8 hours; radioactive ore 9 hours 20 minutes. Fire quartz yields 15 to 20 refined quartz. The other ore and quartz runs yield 5 or 6.

Heavy Furnace, read 2026-11-06

Dwarf King powers
PowerEffect
OreNodes drop one extra of what they already drop, including stone, coal, and the metal ores.
GeodesGeodes from rocks are 25% more likely. That multiplies the existing chance, in the mines and outside.
CoalIn the mines, coal from rocks is 40% more likely, or 20% more likely if you have Prospector. Both multiply the existing chance. Outside the quarry, rocks are 3% more likely to drop coal. Any outdoor rock can also drop one extra coal at 2.5%.
LaddersLadders and shafts from rocks in the Mines and Skull Cavern are 25% more likely. Monster drops of a ladder or shaft in those places rise from 15% to 22%.
BlastsCherry Bombs, Bombs, Mega Bombs, and explosive ammo do not hurt you. Hot Head explosions in the Volcano Dungeon do not hurt you either.

Statue Of The Dwarf King, read 2026-11-06

Foraging Mastery

Foraging Mastery teaches the Mystic Tree Seed and adds Golden Mystery Boxes. It also teaches the Treasure Totem: 5 hardwood, 1 mystic syrup, and 10 moss.

Used outdoors on tillable ground, the totem digs up to 16 artifact spots in a ring around you. A blocked tile simply gets no spot. From 1.6.4 the totem cannot be used indoors.

Treasure Totem is the Foraging Mastery recipe. 1.6 introduced it. 1.6.4 stopped indoor use.

Treasure Totem, read 2026-11-06

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