I have found a Lake Superior agate in Hannibal ... "This actually led me to become a geologist." Spotting these stones takes a trained eye. Sun helps, but so does rain. They become glass-like ...
A 62-acre shorefront estate in Lake Superior’s Two Harbors has hit the market ... The home also incorporates locally quarried ...
The Lake Superior region of America is richer than ... A great number of ancient tools have been found, they all consist of hard stone, with single and double grooves for the reception of handles ...