Indiana Jones And The Great Circle – How To Open The Serpent’s Chest

TL;DR

  • Start at Voss’ Camp in Sukhothai by reading the note next to the ornate Serpent’s Chest
  • Purchase the Breathing Device from Tongdang before attempting underwater key retrieval
  • Collect three ancient keys from Vatican, Gizeh, and Shanghai locations
  • Use the Royal Army Uniform disguise to navigate hostile areas safely
  • Complete additional puzzles in Voss’ Camp for extra rewards and currency


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Embark on an epic treasure hunt across multiple regions in Indiana Jones and the Great Circle to unlock one of the game’s most rewarding challenges. Unlike standard collectibles, The Serpent’s Chest demands strategic backtracking and careful preparation, making it a true test of your exploration skills and attention to detail.

The Serpent’s Chest presents a complex mystery objective situated within the Sukhothai region. Your journey begins at Voss’ Camp, located in the northern sector of this zone, where you’ll discover the ornate container that holds the key to this adventure.

Activate The Serpent’s Chest quest by examining the detailed note positioned beside the elaborate container itself. This document is housed inside the barracks structure immediately to your right after entering Voss’ Camp. The instructions reveal that Nazi forces are hunting for ancient keys scattered across three previously visited campaign locations: the Vatican, Gizeh, and Shanghai.

Before embarking on your multi-region expedition, securing the Breathing Device (also called Rebreather) from Tongdang, the local booklet merchant in Sukhothai, becomes absolutely essential. This equipment provides the underwater endurance necessary to navigate submerged passageways where several keys are concealed.

While preparing at Voss’ Camp, consider these crucial preparatory steps:

  • Acquire the Royal Army Uniform/Disguise from the washing area/yard. This outfit prevents most enemy soldiers from becoming aggressive upon detecting your presence.
  • Locate Voss’ personal safe within the main building. Enter the combination 5-4-8-4 to access over 2,000 baht, providing ample funds for the Rebreather purchase.
  • Discover the Mak-Yek puzzle, a strategic board game challenge found in the same main structure.
  • Solve the Elephant in the Room puzzle positioned at the rear section of the encampment.
  • Serpent's Chest location and Breathing Device requirement
    Ancient Vatican Key map
    Ancient Vatican Key location

    Vatican Key Retrieval Strategy: Return to the Vatican catacombs where you’ll need to navigate through partially flooded underground chambers. The key is hidden in a submerged alcove that requires precise swimming through narrow passageways. Use your Rebreather to explore thoroughly without time pressure, and watch for hidden traps the Nazis have left behind.

    Gizeh Key Challenges: The Egyptian key presents unique environmental hazards. Located deep within an underground water system beneath the pyramids, you’ll encounter strong currents that can push you off course. Swim against the flow by staying close to walls and using structural features for guidance.

    Ancient Gizeh Key map
    Ancient Gizeh Key location

    Shanghai Key Acquisition: This urban environment key requires both land and water navigation. The key is hidden in a flooded basement accessible through a partially submerged entrance. Enemy patrols in this area are more frequent, making the Royal Army Uniform particularly valuable here.

    Ancient Shanghai Key map
    Ancient Shanghai Key location

    Pro Tip: Complete the keys in order of Vatican → Gizeh → Shanghai for optimal efficiency. This sequence minimizes travel time between regions and allows you to build navigation skills progressively.

    Mastering The Serpent’s Chest challenge requires more than just following directions—it demands strategic thinking and awareness of common mistakes that can derail your progress.

    Navigation Optimization: When returning to previous locations, use fast travel points strategically. Plan your route through each area to minimize backtracking and avoid unnecessary enemy encounters. The disguise works best when you maintain a confident posture—hesitation can raise suspicion.

    Combat Avoidance Techniques: Even with the Royal Army Uniform, certain elite troops may still become hostile. Learn to identify these special units and use alternative paths to circumvent them entirely.

    Time Management: Allocate approximately 45-60 minutes for the entire key retrieval process, accounting for travel time between regions. The underwater sections typically require 5-10 minutes each depending on your familiarity with the areas.

    Common Mistakes to Avoid:

  • Attempting key retrieval without the Breathing Device—this will result in drowning and mission failure
  • Forgetting to collect the safe money in Voss’ Camp, leaving you short on funds for essential equipment
  • Rushing through areas and missing subtle environmental clues that indicate key locations
  • Engaging in unnecessary combat that alerts additional enemies to your presence
  • Advanced players should consider completing the additional puzzles in Voss’ Camp before embarking on the key hunt. The extra currency and items obtained can significantly streamline the entire process. For more comprehensive gameplay strategies, check out our Battlefield 6 Complete Guide which covers similar multi-objective challenges.

    Serpent's Chest reward

    Upon collecting all three ancient keys and returning to The Serpent’s Chest in Voss’ Camp, you’ll unlock substantial rewards that justify the extensive effort. The container contains rare artifacts, significant currency, and potentially unique equipment not found elsewhere in the game.

    Treasure Contents: The chest typically yields high-value historical artifacts that can be sold for premium prices, along with specialized gear that enhances Indiana’s capabilities in future missions.

    Achievement Unlocks: Successfully completing this complex multi-region puzzle often triggers achievement or trophy unlocks, contributing to your overall completion percentage.

    The satisfaction of solving one of Indiana Jones and the Great Circle‘s most intricate challenges provides its own reward, demonstrating mastery of the game’s exploration mechanics. This accomplishment prepares you for similar complex puzzles you’ll encounter in other gaming experiences, such as those detailed in our BF6 Weapons Unlock guide for strategic equipment acquisition.

    Remember that the skills developed during this treasure hunt—strategic backtracking, equipment management, and stealth navigation—will serve you well throughout the entire game and in similar adventure titles.

    Action Checklist

    • Travel to Voss’ Camp in Sukhothai and read the note beside the chest
    • Collect Royal Army Uniform from washing area and unlock Voss’ safe (code: 5-4-8-4)
    • Purchase Breathing Device from Tongdang in Sukhothai
    • Retrieve Ancient Vatican Key from submerged catacombs
    • Collect Ancient Gizeh Key from pyramid water systems
    • Secure Ancient Shanghai Key from flooded urban basement
    • Return to Voss’ Camp and unlock The Serpent’s Chest

    No reproduction without permission:SeeYouSoon Game Club » Indiana Jones And The Great Circle – How To Open The Serpent’s Chest Master the multi-location treasure hunt to unlock The Serpent's Chest with this comprehensive Indiana Jones puzzle guide