During the day, Michigan’s beaches are just like any other beach in the world. As a cool-warm breeze sweeps the waves, rocks from the seawater are abandoned on the shore where a visitor pays interest ...

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 ...

Rock hunting at night reveals a side of nature most people never see. While exploring the beaches of Lake Superior in ...

Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks that fluoresce in the dark under ultraviolet light. They became known ...

Yooperlites are rocks that fluoresce under UV light. The best time to search for Yooperlites is after a storm, when waves may have unearthed new rocks along the shores of Lake Superior. Rock hunters ...