Michigan visitors can search for fluorescent rocks with a UV light as darkness falls along the shoreline of Lake Superior in the Upper Peninsula.

Add Yahoo as a preferred source to see more of our stories on Google. Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks ...

Yooperlite hunting in Michigan is always an adventure, but with the help of a black light, we discovered something truly unbelievable in these stones! Join us as we explore what these glowing ...