Here is the video with the clues as to all the locations of the Pachamama Stone Statues. The first location in the video also has the First Stone Statue you interact with.
1. Go to the Pachamama Shrine and interact with the first Stone Statue.
2. Next locate each of the 7 Stone Statues and return them to the Pachamama Shrine ONE AT A TIME.
3. Return to the Pachamama Shrine after it get dark to see what you will find.