Assassin's Creed 4: Black Flag Buried Treasure Guide

Buried Treasure No. 13

Map Location: At Ambergris Key, which is accessible only through a swimming via the diving bell. Look for the treasure map icon on the second floor of the main structure.

Treasure Location: At the largest structure in Misteriosa, climb to the very top. You’ll find the “dig” prompt close to where the flowing water starts.

Reward: Heavy shot design plans, 3000 reales