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BotW Robbie's Research: Show Your Scars, Carry the Blue Flame

Robbie's Research in Breath of the Wild: how it starts, how to show Robbie your scars, and how to carry the blue flame from Tumlea Heights to the Akkala lab.

10/18/2026 QuestFern Team Last updated: 10/18/2026 6 min read

Robbie’s Research is a side quest in The Legend of Zelda: Breath of the Wild. Purah of the Hateno Ancient Tech Lab has an old colleague, Robbie, who studies Guardians at the far end of Akkala. He built a machine that turns ancient materials into ancient soldier gear, the ancient oven, but it has stopped working, and he needs you to bring a blue flame over from the Ancient Furnace. Until you do, the lab will not make ancient arrows, the Ancient Short Sword or any of the other anti-Guardian gear. For the full list of side quests see the side quest list.

Quest giverPurah (Hateno Ancient Tech Lab)
DestinationAkkala Ancient Tech Lab (Show on map)
PrerequisiteMain quest Locked Mementos
What you needA torch
RewardAncient Arrow x3; the ancient oven opens for business

How do you start Robbie’s Research?

In the main quest Locked Mementos you carry the blue flame to the Hateno Ancient Tech Lab and Purah fixes the Sheikah Slate. Afterward she adds one more request:

“Oh, yeah! There’s just one more thing I need from you! You don’t have to worry about this until after you see Impa, but I want you to bring me back some ancient materials! Bring them either to me or to Robbie at the Akkala Ancient Tech Lab.”

That starts the quest. The Akkala Ancient Tech Lab is in the far northeast of the map, on high ground at the northern tip of Akkala.

How do you show Robbie your scars?

Go into the lab and examine the ancient oven inside; Robbie and his assistant Jerrin pop up. Robbie peers at you:

“Are you…the one called…Link?”

Answer “Yes.” and he wants proof:

“If you can show me the wounds your body suffered 100 years ago, that should prove you are truly Link.”

It is simple: take off your body armor and talk to him again (take off all three pieces if you want to be safe). He accepts it:

“Hm? Hm! Hmm… Yes, the number of scars on your body…just as I remember. Most seem to have healed, but they do line up with the scars I know you got during the Great Calamity 100 years ago.”

A white-haired old researcher in goggles gesturing excitedly in a room full of bookshelves
Robbie, director of the Akkala Ancient Tech Lab.

He then talks at length about defeating the Calamity, and finally explains the problem: his “Cherry”, the ancient oven, is out of sorts and cannot make ancient soldier gear. To fix it:

“An ancient furnace can be simply described as a singular place that gathers massive amounts of energy. Get the blue flame from Tumlea Heights, put it in the furnace, and then Cherry… I mean…the ancient oven will be fixed.”

Where do you get the blue flame?

  1. Get a torch. There is one in the lab; take it if you have none.
  2. Head west to Tumlea Heights. The Ancient Furnace is on Tumlea Heights west of the lab (Show on map): a huge split rock with a blue glow inside.
  3. Light the torch. Hold the torch up to the Ancient Furnace and it catches the blue flame.
A huge split rock in a grassy field with a glowing blue device inside the crack
An Ancient Furnace. Hold a torch up to it to take the blue flame.

How do you carry the blue flame back?

The walk is not long. The hard part is keeping the flame alive:

  • Light the stone lanterns. A line of roofed stone lanterns runs between the Ancient Furnace and the lab. Light each one as you pass. If the torch goes out later, relight it at the nearest lit lantern instead of going back to the furnace.
  • Watch for rain. It rains often in Akkala and rain puts out the torch. The lanterns have roofs and stay lit in the rain, so light one as soon as rain looks likely.
  • Watch for monsters. Moblins and other monsters stand along the route; you can clear them first and carry the flame afterward.
  • Putting the torch away reportedly puts the flame out, so avoid climbing, gliding and anything else that stows your weapon.
Link holding a torch with a blue flame next to a stone lantern glowing blue, beside autumn trees
A stone lantern on the way. Light it so you can come back and relight.

At the lab, light the furnace outside the door with the blue flame. It lights up blue, and the lab becomes a travel gate: “Akkala Ancient Tech Lab has been added to your map as a travel gate.”

Link in front of the lab holding a blue-flame torch up to a large blue furnace
Lighting the furnace outside the lab.

What is the reward?

Go in and talk to Robbie. At first he thinks his love got Cherry working; once he learns you lit the furnace, he hands over a gift:

“Now then, please take this as a gift of my gratitude now that Cherry is fixed!”

The reward is Ancient Arrow x3, and the quest is complete.

What does the ancient oven make?

From now on, give the ancient oven ancient materials and rupees in exchange for ancient soldier gear:

“In addition to ancient arrows, Cherry can make all kinds of ancient soldier gear. If you’re looking to acquire some, give your ancient materials…and rupees…to Cherry.”

An Ancient Arrow is 90 rupees, Ancient Arrow x3 is 250 and x5 is 400; weapons such as the Ancient Short Sword, Ancient Shield and Ancient Bow are 1,000 rupees each, and everything also takes ancient materials. For the full price list and materials see ancient materials, and for the armor see the Ancient set.

The ancient oven's trade list showing Ancient Arrow 90 rupees, x3 250, x5 400 and several 1,000-rupee items
The ancient oven’s trade list. Every item takes rupees plus ancient materials.

Video walkthrough

FAQ

How do you start Robbie's Research?
In the main quest Locked Mementos, once Purah has fixed the Sheikah Slate, she asks you to bring ancient materials to her or to Robbie at the Akkala Ancient Tech Lab. The lab is in the far northeast of Akkala.
How do you show Robbie your scars?
He wants to see the wounds from 100 years ago to be sure you are Link. Take off your body armor and talk to him again; take off all three pieces if you want to be safe.
Where is the blue flame?
At the Ancient Furnace on Tumlea Heights, west of the lab. Light a torch there and carry the flame back to the furnace outside the lab.
What if the rain puts out the flame?
There are roofed stone lanterns along the way. Light them as you pass, and if your torch goes out, relight it at the nearest lit lantern instead of going back to the Ancient Furnace.
What is the reward for Robbie's Research?
Three ancient arrows. After that the lab's ancient oven trades ancient soldier gear for ancient materials and rupees, and the lab becomes a travel gate.

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