Mayan Stelae is a collectible in Assassin's Creed 4: Black Flag. Solving the puzzle gives Edward a keystone.
Walkthrough
The Stela is found at the very Northern point in this area. Climb up it and make the few tweaks needed to line things up.
Assassin's Creed 4: Mayan Stela - Cape Bonavista
From Orcz
