According to geologist, this rock was formed about 1.6 billion years ago. At that time this area looked much like the Florida Everglades do today with ribbons of rivers, episodes of floods, drying & changing sediment layers. These ripples of sand & mud were preserved by layers of sediment laid down on top of them. Many layers of sediment created pressure &, after millions of years, this Sioux Quartzite rock was formed. When glaciers scraped this land 14,000 years ago, different layers of this rock were exposed. :)
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People hunting game most likely traveled this ridge, which provided a dry route above the lake-dotted prairie for thousand of years.
The earlies inhabitants of this region hunted woolly mammals & musk-ox. Beginning with the dominance of prairie about 9,000 years ago, bison & elk provided new sources of food, clothing & fur.
Red Rock Ridge
Ahead of you is apart of Red Rock Ridge, a series of quartzite outcroppings fringes the eastern edge of the "Coteau des Prairies". Named by early French explored, the Coteau-meaning hill or knoll-is a high bedrock plateau sculpted by glaciers & once covered by prairie.
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Identifying what these carvings might represent is one way of estimating their age. Atlatls-dart throwing tools used here as early as 12,000 years ago-are one prominent clue. Another is the presence of bison-which didn't begin roaming this region until about 9,000 years ago. Keep a lookout for carvings of atlatls & bison.
Tags: Jeffers Petroglyphs Minnesota Red Rock Ridge minnesota petroglyphs pecked comfrey minnesota jeffers petroglyphs pecked brown county comfrey minnesota jeffers petroglyphs brown county minnesota virgin prairie brown county minnesota Archaic period (North America) Minnesota Historical Society & the Jeffers Petroglyphs Site Brown county Minnesota National Register of Historic Places brown county minnesota tallgrass prairie brown county minnesota red rock prairie brown county minnesota Sioux Quartzite minnesota petroglyphs sites minnesota petroglyphs landmarks brown county minnesota otoe people brown county minnesota sioux people brown county minnesota iowa people brown county minnesota rock cravings brown county minnesota rock peaking brown county minnesota rock art brown county minnesota rock petroglyphs brown county minnesota petroglyphs brown county minnesota jeffers site brown county minnesota native american indian spiritual place brown county minnesota native american indian sites brown county minnesota jeffers petroglyphs interpretation signs brown county minnesota jeffers petroglyphs historic site brown county minnesota jeffers petroglyphs & cheyenne people minnesota prairie prairie landscape scenery brown county minnesota prairie land brown county minnesota historic sites brown county minnesota archaeology sites brown county minnesota archaeological sites.
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A Rare Find
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This place of spiritual power has survived for thousands of years.
This trail will take you through tallgrass prairie as a place where people left their marks thousands of years ago. Please stay on the trail & respect what you find here.
Tags: Jeffers Petroglyphs Minnesota Red Rock Ridge minnesota petroglyphs pecked comfrey minnesota jeffers petroglyphs pecked brown county comfrey minnesota jeffers petroglyphs brown county minnesota virgin prairie brown county minnesota Archaic period (North America) Minnesota Historical Society & the Jeffers Petroglyphs Site Brown county Minnesota National Register of Historic Places brown county minnesota tallgrass prairie brown county minnesota red rock prairie brown county minnesota Sioux Quartzite minnesota petroglyphs sites minnesota petroglyphs landmarks brown county minnesota otoe people brown county minnesota sioux people brown county minnesota iowa people brown county minnesota rock cravings brown county minnesota rock peaking brown county minnesota rock art brown county minnesota rock petroglyphs brown county minnesota petroglyphs brown county minnesota jeffers site brown county minnesota native american indian spiritual place brown county minnesota native american indian sites brown county minnesota jeffers petroglyphs interpretation signs brown county minnesota jeffers petroglyphs historic site brown county minnesota jeffers petroglyphs & cheyenne people minnesota prairie prairie landscape scenery brown county minnesota prairie land brown county minnesota historic sites brown county minnesota archaeology sites brown county minnesota archaeological sites.
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