Jeffers Petroglyphs
Comfrey, MN
Culture
The Jeffers Petroglyphs site is an outcrop in southwestern Minnesota with pre-contact Native American petroglyphs. The petroglyphs are pecked into rock of the Red Rock Ridge, a 23-mile-long Sioux quartzite outcrop that extends from Watonwan County, Minnesota to Brown County, Minnesota.
From Wikipedia, CC BY-SA 4.0
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