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QuestmajorSide missionModerate

The Hunt for Bubbul Gems!

A side adventure in which Link helps Koltin pursue his dream of becoming a Satori by collecting Bubbul Gems from glowing Bubbulfrogs found throughout Hyrule’s caves.

RoleOptional collection quest and long-term reward track involving Bubbulfrogs, cave exploration, and Koltin’s requests.
StatusAvailable in the released game
Importancemajor
RewardVarious rewards, including monster masks and the Mystic armor set.
TimeVariable; completion depends on how many caves and Bubbulfrogs the player chooses to find.
  • Quest typeSide adventure
  • Starting regionEldin
  • Starting landmarkPico Pond
  • Primary objectiveCollect Bubbul Gems
  • Source of gemsBubbulfrogs in caves
  • Cave distributionOne Bubbulfrog per cave
  • Progress styleLong-term exploration
  • DifficultyModerate

The quest has no fixed completion time because progress depends on how extensively the player explores Hyrule’s caves.

Key takeaways

This is an exploration-focused quest with no single final cave or conventional boss encounter. Its progress is tied to the number of Bubbul Gems Link brings to Koltin.

  • Start near Pico Pond Speak with Kilton and Koltin at the cave near Pico Pond in Eldin to begin the quest and learn why Koltin wants Bubbul Gems. Starting the quest
  • Search caves for Bubbulfrogs Bubbul Gems come from glowing Bubbulfrogs inside caves. Each cave has exactly one, so a completed cave represents one collected gem from that location. Finding gems
  • Return to Koltin Koltin moves around Hyrule, including areas near Ulri Mountain Skyview Tower and Lookout Landing. Find him again to exchange the gems you have collected. Redeeming gems
  • Use Cherry trees as search aids Offering fruit at a Cherry tree summons a Satori that reveals nearby cave entrances, making these landmarks useful when the map still has unexplored areas. Locating caves
  • Expect a long-term reward track Koltin provides several rewards over the course of the exchanges, including monster masks and the Mystic armor set. Quest rewards

The Hunt for Bubbul Gems! overview

The Hunt for Bubbul Gems! is a long-running side adventure about helping Koltin collect Bubbul Gems so he can pursue his dream of becoming a Satori.

The quest begins near Pico Pond in the Eldin region, where Link can speak with Kilton and Koltin at a cave. Koltin explains his unusual ambition and asks Link to bring him Bubbul Gems. These gems are not purchased or found as ordinary cave treasure: they come from defeating the glowing Bubbulfrogs that inhabit caves across Hyrule.

The central task is deliberately spread across the entire map rather than confined to one dungeon or a short route. Each cave contains one Bubbulfrog, so exploring caves and defeating their resident creature gradually advances Koltin’s requests. When a Bubbulfrog is defeated, the cave is marked as completed on the game map, giving the player a practical way to track which cave discoveries have already produced a gem.

Koltin’s reward exchange gives the quest its long-term structure. Delivering more Bubbul Gems unlocks additional rewards, including monster masks and pieces of the Mystic armor set. Koltin does not remain at one permanent location throughout the adventure; he can move to places such as the area near Ulri Mountain Skyview Tower and Lookout Landing, so players may need to locate him again when returning with more gems.

The quest also connects cave hunting with Hyrule’s surface landmarks. Cherry trees can reveal nearby cave entrances when Link offers fruit at them, causing a Satori to appear and illuminate surrounding locations. Later in the quest, Koltin can help point toward missing Bubbulfrogs, although that sensing ability eventually stops being useful when only a small number remain.

Where this sits

InitiationMeet Kilton and Koltin near Pico Pond
ExplorationFind caves and defeat their Bubbulfrogs
ExchangeBring collected Bubbul Gems back to Koltin
Extended huntContinue searching for remaining cave creatures
  1. 1Speak with Kilton and KoltinstartThe first meeting near Pico Pond starts the side adventure.
  2. ●Collect Bubbul GemsobjectiveDefeat Bubbulfrogs found inside caves across Hyrule.
  3. 3Return to Koltinturn-inKoltin relocates, so later exchanges require finding his current position.
  4. 4Complete the reward exchangesrewardContinue delivering gems to unlock further rewards, including monster masks and the Mystic armor set.
  5. 5Track the final missing BubbulfrogscompletionKoltin can assist with locating missing creatures for part of the hunt, but his sensing ability eventually stops when few remain.

The quest is best understood as an ongoing collection track rather than a linear mission with one final encounter.

Requirements

The known initiation requirement is a conversation with Kilton and Koltin at the cave near Pico Pond. The wider collection portion relies on exploring caves throughout Hyrule.

  • RequiredReach the cave near Pico PondTravel to the cave near Pico Pond in the Eldin region where Kilton and Koltin are waiting.
  • RequiredSpeak with Kilton and KoltinTalk to both characters to hear Koltin’s request and begin collecting Bubbul Gems.
  • RecommendedExplore Hyrule’s cavesThe quest’s objectives extend across the world, so access to multiple regions makes progress easier but is not described as a separate formal requirement.
  • OptionalUse Cherry trees for guidanceOffering fruit at Cherry trees can reveal nearby cave entrances through a Satori. This is a search aid rather than a stated prerequisite.

Objectives

  1. Meet Kilton and Koltin near Pico PondFind the pair at the cave in the Eldin region and speak with them to establish the quest.
  2. Defeat Bubbulfrogs inside cavesSearch caves across Hyrule for the glowing creatures and defeat each one to obtain a Bubbul Gem.
  3. Deliver Bubbul Gems to KoltinLocate Koltin after he moves and exchange the gems you have collected for his available rewards.
  4. Continue the hunt across HyruleUse completed caves, Cherry trees, and Koltin’s temporary sensing assistance to locate more Bubbulfrogs.
  5. Unlock Koltin’s later rewardsKeep making exchanges to work through the reward track, which includes monster masks and the Mystic armor set.

Walkthrough

  1. 01

    Find the quest’s opening location

    Travel to the cave near Pico Pond

    Go to the cave near Pico Pond in the Eldin region and look for Kilton and Koltin. This location is the quest’s starting point, so do not begin the wider cave search before speaking with the pair.

    Location: Cave near Pico Pond, Eldin region

    TipTreat this meeting as the start of the collection track; the main work happens later across Hyrule.

  2. 02

    Initiate The Hunt for Bubbul Gems!

    Speak with Kilton and Koltin

    Talk to the characters at the cave to hear Koltin describe his dream of becoming a Satori. The conversation establishes that Bubbul Gems are the items he wants Link to collect.

    Location: Cave near Pico Pond

    Checkpoint
  3. 03

    Locate Bubbulfrogs

    Enter caves while exploring Hyrule

    Search caves as you travel through Hyrule rather than expecting all of the required targets to be in Eldin. Bubbulfrogs are glowing creatures found inside caves, making their distinctive appearance the key visual clue.

    Location: Caves across Hyrule

    TipCherry trees can help with this step: offering fruit at one causes a Satori to reveal nearby cave entrances.

  4. 04

    Collect Bubbul Gems

    Defeat the Bubbulfrog in each cave

    When you find a Bubbulfrog, defeat it to obtain a Bubbul Gem. Each cave contains exactly one Bubbulfrog, and defeating that creature marks the cave as completed on the game map.

    Location: Inside an unexplored cave

    Watch outA cave marked as completed has already yielded its Bubbulfrog, so searching it again will not provide another creature from that location.

  5. 05

    Exchange Bubbul Gems

    Return to Koltin with the gems

    Find Koltin after collecting gems and speak with him to make an exchange. He moves to different places during the game, including areas near Ulri Mountain Skyview Tower and Lookout Landing, so the original Pico Pond location is not always the correct turn-in point.

    Location: Koltin’s current location

    TipCheck the map and known Koltin locations before crossing Hyrule to make a delivery.

  6. 06

    Advance the reward track

    Continue exchanging gems for rewards

    Koltin’s requests form an extended progression rather than a single delivery. Bring additional Bubbul Gems as you find more Bubbulfrogs to receive further rewards, including monster masks and pieces of the Mystic armor set.

    Location: Koltin’s current location

  7. 07

    Find remaining Bubbulfrogs

    Use Koltin’s sensing help when available

    As the collection continues, Koltin can eventually help pinpoint missing Bubbulfrogs. His ability is not unlimited: when only a few remain, he stops being able to sense them, so the final search must rely on exploration and map tracking.

    Location: Across Hyrule

    Watch outDo not rely on Koltin alone for the last few targets; his sensing ability eventually stops working when few Bubbulfrogs remain.

  8. 08

    Complete as much of the Bubbul Gem hunt as desired

    Finish the remaining cave hunt

    Visit unexplored caves, defeat their Bubbulfrogs, and return to Koltin for any exchanges still available. The quest’s practical endpoint is reached through continued collection and redemption rather than a separately identified boss battle.

    Location: Caves and Koltin’s locations across Hyrule

Mission mechanics

Bubbul Gems are tied directly to cave exploration. A Bubbulfrog appears inside each cave, and defeating it awards the gem associated with that location. Because there is exactly one Bubbulfrog per cave, the cave-completion marker on the map doubles as progress information for the hunt.

Koltin’s exchanges create a reward ladder that can be revisited throughout the game. The quest therefore rewards players who combine ordinary travel with deliberate exploration: caves discovered during another objective can be cleared immediately, while Cherry trees provide a way to reveal clusters of nearby entrances when the map still has gaps.

The search becomes less automated near the end. Koltin can help identify missing Bubbulfrogs for part of the adventure, but that sensing function stops when only a small number are left. At that stage, players must compare completed cave markers with unexplored areas and revisit regions methodically.

What works and what does not

Strengths

  • The quest integrates naturally with normal exploration because caves are spread across Hyrule rather than confined to one region.
  • The one-Bubbulfrog-per-cave rule makes cleared cave markers useful for tracking progress.
  • Cherry trees give players a world-based method for revealing nearby cave entrances.
  • The reward track provides a reason to keep returning to Koltin after the opening encounter.

Weaknesses

  • Progress can become diffuse because the quest covers caves throughout Hyrule instead of presenting one compact route.
  • Koltin’s movement means a later exchange may require searching for his current location.
  • Koltin’s sensing ability does not remain effective when only a few Bubbulfrogs are left, making the final portion more dependent on manual map tracking.

Best uses

  • Clear Bubbulfrogs during regional exploration to avoid making a separate trip for every cave.
  • Use Cherry trees when an area appears to have unexplored cave entrances.
  • Treat completed cave markers as a record of collected gems, especially during the late search.

Collectibles

  • 01
    Bubbul Gems

    Where: Inside caves across Hyrule

    Each cave contains exactly one Bubbulfrog, and defeating it provides the Bubbul Gem used in Koltin’s exchanges.

  • 02
    Monster masks

    Where: Koltin’s reward exchanges

    Monster masks are among the various rewards Koltin can provide for delivering Bubbul Gems.

  • 03
    Mystic armor set

    Where: Koltin’s reward exchanges

    The Mystic armor set is one of the notable reward groups connected to continued Bubbul Gem deliveries.

Rewards and drops

  • Bubbul Gem
    Defeating a Bubbulfrog produces the gem required for progress in Koltin’s exchange track.
  • Monster masks
    Koltin offers various monster masks as rewards for delivering more Bubbul Gems.
  • Mystic armor set
    Continued exchanges can unlock the Mystic armor set.

Characters in this mission

Aftermath

Keep the cave markers working for you

The quest does not require one uninterrupted expedition. Defeat a cave’s Bubbulfrog whenever you encounter it, then use the completed marker to distinguish already-cleared caves from places still worth searching. This becomes especially important after Koltin can no longer sense the final missing Bubbulfrogs.

Trivia and useful details

  • Koltin’s goal is to become a Satori, which explains why the quest connects his requests with caves and Cherry trees.
  • A cave contains one Bubbulfrog, making the cave itself a useful unit for tracking Bubbul Gem progress.
  • Koltin is not restricted to the place where Link first meets him; he can later appear near Ulri Mountain Skyview Tower and Lookout Landing.
  • Cherry trees provide a non-menu method of finding nearby cave entrances by calling a Satori when fruit is offered.

Relationships

characters

enemies

  • BubbulfrogTarget enemyDefeating Bubbulfrogs inside caves yields Bubbul Gems.

items

  • Bubbul GemsQuest itemKoltin collects these gems in exchange for rewards.

equipment

  • Mystic armor setRewardA notable reward group available through continued Bubbul Gem exchanges.

locations

  • Pico PondStarting locationThe cave near Pico Pond is where Link meets Kilton and Koltin.