We discovered this stone thing buried in our back yard. There are straight grooves on three sides. It weighs 713 grams (about a pound and a half).
The best guess so far is from Phil Harris,
The Thing
Chip's journey
Thoughts about community, learning, and life.
Chip's journey 
Chip: I listened to Phil Harris, including the Bump bump bump, and then “That’s What I Like About The South” Pretty cool. As far as your artifact, it could be currency for an ancient tribe, or it could be an insulator for telephone or electric lines. Then again, it could also be a crystal placed there by interstellar visitors who are now watching all the videos you have downloaded.
LikeLike