Caverns of Corrosion are repeatable dungeons that players can run to farm Relic Sets in Honkai: Star Rail. Learn how to unlock all the Caverns of Corrosion and their location, as well as all the Relic Sets you can obtain for each Cavern in this guide!

List of Caverns of Corrosion in Honkai: Star Rail

List of Caverns by Location

List of Caverns in Herta Space Station

Caverns	Cavern Details
Path of Gelid Wind	Cavern Location: Herta Space Station, Storage Zone Cavern Relics: Hunter of Glacial Forest Eagle of Twilight Line

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List of Caverns in Jarilo-VI

Caverns	Cavern Details
Path of Providence	Cavern Location: Jarilo-VI, Everwinter Hill Cavern Relics: Guard of Wuthering Snow Genius of Brilliant Stars
Path of Jabbing Punch	Cavern Location: Jarilo-VI, Silvermane Guard Restricted Zone Cavern Relics: Champion of Streetwise Boxing Thief of Shooting Meteor
Path of Drifting	Cavern Location: Jarilo-VI, Corridor of Fading Echoes Cavern Relics: Passerby of Wandering Cloud Musketeer of Wild Wheat

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List of Caverns in The Xianzhou Luofu

Caverns	Cavern Details
Path of Darkness	Cavern Location: The Xianzhou Luofu, Fyxestroll Garden Cavern Relics: The Ashblazing Grand Duke Prisoner in Deep Confinement
Path of Elixir Seekers	Cavern Location: The Xianzhou Luofu, Alchemy Commission Cavern Relics: Longevous Disciple Messenger Traversing Hackerspace
Path of Conflagration	Cavern Location: The Xianzhou Luofu, Stargazer Navalia Cavern Relics: Firesmith of Lava-Forging Wastelander of Banditry Desert
Path of Holy Hymn	Cavern Location: The Xianzhou Luofu, Cloudford Cavern Relics: Knight of Purity Palace Band of Sizzling Thunder
Path of Uncertainty	Cavern Location: The Xianzhou Luofu, The Shackling Prison Cavern Relics: Sacerdos' Relived Ordeal Scholar Lost in Erudition

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List of Caverns in Penacony

Caverns	Cavern Details
Path of Cavalier	Cavern Location: Penacony, Penacony Grand Theater Cavern Relics: The Wind-Soaring Valorous Iron Cavalry Against the Scourge
Path of Dreamdive	Cavern Location: Penacony, The Reverie (Dreamscape) Cavern Relics: Pioneer Diver of Dead Waters Watchmaker, Master of Dream Machinations

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How to Unlock Caverns of Corrosion

Unlocked During The Stars Are Cold Toys Main Quest

Most Caverns of Corrosion are unlocked during the The Stars Are Cold Toys quest, which you can access once you reach Trailblaze Level 24.

You will encounter the first Cavern of Corrosion in the Corridor of Fading Echoes as you try to activate the mechanism in The Stars Are Cold Toys quest.

The Stars Are Cold Toys Mission Guide

The Xianzhou Luofu Caverns are Unlocked After Trailblaze Level 29 and 34

Three caverns of corrosion in the Xianzhou Luofu are locked until you reach their areas as you progress through the main story in Windswept Wanderlust and Topclouded Towerthrust.

The first quest will be available at Trailblaze 29, but you will need to be Trailblaze 34 to unlock the other.

The Penacony Cavern is Available After Unlocking The Reverie (Dreamscape)

After you unlock The Reverie (Dreamscape) in the Trailblaze Mission called Should One Awaken at Midnight, you can now access the Path of Dreamdive, which is the first cavern you can encounter in Penacony.

What Are Caverns of Corrosion?

Domains that Reward Cavern Relics

Caverns are domains that reward Cavern Relics once you clear them. Each Cavern drops different Relic Sets, meaning you won't get them in one place. You can use the Interastral Guide to check each Cavern and their drops!

You will need 40 Trailblaze Power to get in and claim the rewards.
Relics Guide - Sets and Stats

Other Relics Called Planar Ornaments are Obtained In Simulated Universe

Planar Ornaments are also Relics, but you won't find them in the Caverns of Corrosion. They can be found in the Simulated Universe, after beating the Domain - Elite and the Domain - Boss inside.

Same as the Caverns, you will need 40 Trailblaze Power to get the rewards!

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