Wisconsin moonstones are only found in a small corner of Marathon County. This business allows people to dig for them.
Rockhounding is a popular activity, but digging through the rules of where you can go and what you can keep isn't much fun.
Wisconsin moonstones are shimmering blue feldspars created 1.5 billion years ago by volcanic activity. The only place where Wisconsin moonstones are found is in a small niche of Marathon County.