From the publishers blurb:
An age of splintered tribes and infighting ended with the death of the priest-king of the Hunahpu people. As punishment, the gods sealed their sacred pyramid with powerful magic. Generations later, those old gods and their kingdom have been forgotten. With their powers diminished, the seal on the pyramid has broken, leaving all its ancient treasures ripe for the taking.
On The Isle of Forgotten Gods, players will journey across a jungle landscape full of monsters and characters inspired by Mesoamerican myth. Inside, you will find:
A 15-location pointcrawl of the isle including the wreckage of a magical flying ship and the lair of the demon parrot Seven Macaw
Two dungeon areas in the forgotten gods' pyramid and a palace overrun by frog-men
A slew of unique monsters and magic items for use in your game.