The Treasure Map from Petite Caverne points to a buried chest on the shore of Tulum in Assassin’s Creed Black Flag Resynced. You first pick up the map inside the Petite Caverne smuggler den, then sail to Tulum and dig at the marked spot to claim the reward.
Quick answer: Loot the map from the cadaver at 862,237 in Petite Caverne, then dig behind the crates under a palm tree at 40,372 in Tulum to open the chest for 3,000 Reales and the Fire Barrel Storage Ultimate Plan.
Where to find the treasure map in Petite Caverne
The map sits at coordinates 862,237 inside Petite Caverne. Head to the western part of the smuggler den and search the corner near the bridge. The map is on a cadaver placed next to a green barrel.
Petite Caverne is a restricted area with patrolling enemies. Approach quietly or clear the guards before looting so you are not interrupted while grabbing the map.
Where to dig up the buried treasure in Tulum
The buried chest is at coordinates 40,372 in Tulum. Start from the Viewpoint and travel south toward the shore.
You will know it worked when the chest opens, and the loot notification appears on screen, adding the Reales and the ship plan to your inventory.
Treasure map rewards
| Reward | Detail |
|---|---|
| Reales | 3,000 |
| Ship plan | Fire Barrel Storage Ultimate Plan |
The Fire Barrel Storage Ultimate Plan is an upgrade for the Jackdaw, letting you carry more fire barrels for naval combat. Opening the Tulum chest is the only step needed to obtain it from this map.
If the map does not appear when you reach the Tulum beach, confirm you already collected it from the cadaver in Petite Caverne, since the treasure marker only shows once the map is in your possession. Syncing the nearby Viewpoint first also makes the dig spot easier to locate on your map.
