Introduction
The Post Office Cellar Lockbox is a challenging puzzle in Indiana Jones and the Great Circle that requires locating a secret code to unlock a chest hidden in the cellar along Via Di Belvedere. Follow this complete guide to solve the puzzle and claim your rewards.
Post Office Cellar lockbox Puzzle Location
The locked chest is in the post office cellar at Via Di Belvedere. You can only access this area by starting A Savage Discovery fieldwork. During this quest, a guard breaks an old vase upon seeing Indiana. Defeat him to progress and obtain the clue for the lockbox.


Post Office Cellar lockbox Puzzle Solution
The code is easy to figure out if you find the clue.
- Defeat the guard in the cellar.
- Take the note from his body to get the lockbox code.
Step-by-Step Solution
- After defeating the guard in A Savage Discovery, pick up the Lockbox Note from his body.

- The note states that the code is “November, last year.” Since the game takes place in 1937, last year was 1936.

- Enter 1136 (short for November 1936) to unlock the chest.

Rewards
When you successfully unlock the chest, you will be rewarded with the Street Scrapper I Adventure Book, a valuable item that, when learned, enhances your melee weapon damage, making your attacks more powerful and effective in combat.


Check out our guide on “Voss’ Gold Stash Puzzle” from Indiana Jones and the Great Circle.