Genshin Impact: Complete Guide to Hidden Chests in the Ancient Sacred Mountain (Natlan Update)

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Valencia

Guide Curator at GladiatorBoost

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The release of Natlan in Genshin Impact brings more than just fiery landscapes and new characters—it introduces two massive new explorable regions, including the mysterious Ancient Sacred Mountain. Tucked away beneath Atocpan’s volcanic terrain, this expansive underground realm is rich with puzzles, secrets, and perhaps most excitingly, hidden treasure chests waiting to be discovered.

This guide covers all known hidden chests in the Ancient Sacred Mountain, offering walkthroughs for each puzzle, combat encounter, and exploration challenge. Whether you’re a completionist or simply looking to boost your Primogem stash, uncovering every chest is well worth your time.

🔐 How to Access the Ancient Sacred Mountain

Before hunting for hidden treasure, you’ll need to unlock access to the Ancient Sacred Mountain. This region becomes available after completing a specific side quest involving your new Saurian companion. Follow the questline tied to the Little One in Natlan, and you’ll eventually gain entry into this sprawling subterranean map.

🗺️ All Hidden Chest Locations in the Ancient Sacred Mountain

Here’s a detailed breakdown of 16 hidden chest locations, what you’ll need to solve or defeat, and how to get there efficiently.

1. Defeat the Hidden Enemy

• Location: Farthest waypoint in Flame-Melding Ritual Grounds

• Method: Indwell a Tatankasaurus, break nearby Pulverite, defeat the enemy that spawns to unlock a Common Chest.

2. Discover the Hidden Room

• Location: Center of Flame-Melding Ritual Grounds

• Method: Use Tatankasaurus’ slam attack on glowing floor tiles, break Pulverites on each level to reveal a Secret Source Dragon Idol with a chest on its head.

3. Reach the Floating Island

• Location: After activating the Dragon Idol

• Method: Indwell a Qucusaur and fly north to a floating island containing three chests.

4. Dig the Qucusaur’s Nest

• Location: Northeast of Flame-Melding Ritual Grounds

• Method: Find Qucusaur nests near the cliff’s edge; one has a “Dig” prompt that reveals a chest.

5. Break the Pulverites

• Locations:

  • Central island leading to Sea of Shifting Sentience

  • Below Ruined Armament Workshop waypoint

• Method: Use a Yumkasaur or Tatankasaurus to throw explosive plants and break Pulverites, revealing hidden chests.

6. Complete the Flowlight Targets Challenge

• Location: West of Sea of Shifting Sentience

• Method: Indwell a Koholasaurus, hit all Flowlight Targets using projectiles, and unlock an Exquisite Chest.

7. Destroy the Oozing Cores

• Locations: South of Sea of Shifting Sentience and Ruined Armament Workshop

• Method: Use a Yumkasaur or Tatankasaurus to destroy cores with explosive plants or sprint attack to spawn treasure chests.

8. Break the Phlogiston on the Wall

• Location: Southeast waypoint at Sea of Shifting Sentience

• Method: Use Tatankasaurus’ charge to break a glowing Phlogiston wall, defeat the enemy, and claim a hidden chest.

9. Win the Tatankasaurus Race

• Location: Under the Heart of Force Inversion

• Method: Speak to the Secret Source Servant to start a race. Finish first to earn a reward chest.

10. Activate the Waterwheel Mechanism

• Location: East of previous race area

• Method: Destroy the Phlogiston rock using a Tatankasaurus. The spinning waterwheel reveals a hidden chest.

11. Dig the Cracked Ground

• Location: South of the Heart of Force Inversion

• Method: Defeat a Furnace Shell Mountain Weasel, then dig at the cracked ground to unearth a treasure chest.

12. Solve the Lava Puzzle

• Location: Lava pool edge at Ruined Armament Workshop

• Method: Step on specific platform boxes without triggering bombs to unlock the central chest.

13. Ride the Dragon Idol

• Location: North of Ruined Armament Workshop

• Method: Wait for the Secret Source Dragon Idol to approach. Jump on, pull the lever to unlock a chest. Ride it again to a new spot for another hidden chest.

14. Hidden Time-Trial Challenge

• Location: East of Esoteric Arrays

• Method: Activate the mechanism near the boxes to trigger a Pyro Particle challenge. Complete in time to receive a reward.

15. Break the Shining Boxes

• Location: South of Pseudostar Pedestal

• Method: Use a Tatankasaurus to move platforms and access a hidden room. Break all shining boxes to reveal three treasure chests.

16. Find the Iridescent Legacy

• Locations:

  • Southeast of Sea of Shifting Sentience

  • Lower Flame-Melding Ritual Grounds

  • Lava edge at Heart of Force Inversion

• Method: Use Saurians to destroy Oozing Cores and Pulverites. Defeat any hidden enemies to earn Precious Chests.

🚀 Save Time with Genshin Impact Boosting from GladiatorBoost

Tracking down all hidden chests in a massive area like the Ancient Sacred Mountain can be time-consuming—especially when Saurian mechanics, puzzles, and combat challenges are involved. If you’re short on time or just want to ensure you don’t miss a single collectible, GladiatorBoost’s Genshin Impact Boosting Services are here to help.

With GladiatorBoost, you can:

• Unlock every hidden chest and puzzle reward in Natlan

• Collect region-specific Primogems, resources, and story items

• Complete exploration and quests at record speed

Skip the grind and explore Genshin’s newest regions with ease.

🧭 Final Tips for Ancient Sacred Mountain Exploration

• Use Saurian indwelling strategically. Many chests are locked behind creature-based mechanics.

• Always carry stamina food for gliding sections and time trials.

• Switch to the right elements—some puzzles are easier with Cryo, Pyro, or Geo characters.

• Teleport frequently. The region is vast—don’t waste time retracing steps.

• Look for subtle glows or Dig prompts—they often indicate hidden rewards.