ROCHESTER, MN- A new exhibit in Rochester features

12,000-year-old artifacts that were found in a southeastern

Minnesota farm field.

The artifacts include 65 pieces of silicified sandstone used by

native Americans. That includes a well-formed blade and 22 tool

blanks from which sharp-edged stone flakes have been chipped off.

The artifacts were found 70 years ago in Eyota and were later

donated to the Olmsted County History Center.

Karl Wolff, the center's curator, says the artifacts cache is

one of about only 20 of its size in the country.

Experts think the artifacts were brought from central Wisconsin

to Minnesota by the Paleo-Indians who were migrating.

The exhibit also includes two tusks from a woolly mammoth that

were found in the 1970s in Stewartville.