This is based on the ruins at Palenque in the state of Chiapas, Mexico, where the foothills start to rise toward the mountains. The sounds at night are unlike daytime sounds such as frogs and insects. At night, there are the roaring waters and the mystery in the light of the moon.
The moon has just risen over the east. Suddenly, there appears creatures of the night, seeking a refreshing drink before the hunt begins.