|► Minnesota (Cottonwood County), Comfrey — Florence Cook Roefer Prairie Trail —|
|“Grand Old Lady of the Prairie" Florence Cook Roefer (1913-2000) was an early leader in preserving these rock carvings and the surrounding prairie. As the first site manager of Jeffers Petroglyphs, Florence nurtured 33 acres of . . . — — Map (db m140823) HM|
|► Minnesota (Cottonwood County), Comfrey — Glaciers Marked the Rock —|
|This outcropping is an “erosional high”-rock smoothed off by glaciers. Continental glaciers advanced and retreated across this region many times in the last million years, before leaving for good about 12,000 years ago. . . . — — Map (db m140824) HM|
|► Minnesota (Cottonwood County), Comfrey — How did this Prairie get here? —|
About 14,000 years ago this landscape was covered with ice.
When the ice melted, an open parkland dotted with black spruce developed. After a period of warming and drying, forests of oak and elm replaced the spruce. People began . . . — — Map (db m140820) HM
|► Minnesota (Cottonwood County), Comfrey — Prairie Preservation —|
|What are those fence posts doing in the middle of the prairie? They used to mark the edge of a farm field. In 1974 the Minnesota Historical Society planted a few grass varieties on 50 acres of cropland, initiating one of the first . . . — — Map (db m140804) HM|
|► Minnesota (Cottonwood County), Comfrey — Survival Through Fire —|
|Prairie fires set by lightning or by people were common in this region. Fortunately, most prairie plants are long-lived perennials with deep, extensive root systems. Their ability to produce vigorous new shoots below the soil's . . . — — Map (db m140822) HM|
|► Minnesota (Cottonwood County), Comfrey — Why did people come to this region? —|
|People hunting game most likely traveled this ridge, which provided a dry route above the lake-dotted prairie for thousands of years. The earliest inhabitants of this region hunted woolly mammoths and musk-ox. Beginning with the . . . — — Map (db m140821) HM|
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