Aztec Empire. Temple of the Skull

The letters you received last night wrote exactly the same thing, but they finally shed light on the case of the professor Robert Jackson who has been missing for 6 years. And the map that accompanied it led you deep into the Amazon, the least explored and most inaccessible part of the jungle. Following the clues left by your professor and collaborator, you are called to solve a mystery that has remained unsolved for centuries, discovering something that will change world history as we know it today.