Lansing State Journal 24 Jul 2000
Explorers leave for Arctic Circle MARQUETTE A local historian and his wife are bound for the Arctic Circle, searching for possible evidence of an ancient copper trade in North America. Fred Rydholm and wife June left Saturday in their car for Ottawa. From there, they will fly to Greenland, take a converted Russian icebreaker along the island's western coast and ultimately reach Lancaster Sound in the Northwest Passage, near the 75th parallel. The Rydholms hope to find at least one dolmen, a large rock raised up on three, four or five smaller rocks. The Rydholms believe the dolmens sometimes made of stones weighing 60 tons or more were markers placed about 2,000 B.C. by ancient people who came to North America seeking copper. The Rydholms have visited dolmens in North America and Europe.