The Jeffers Petroglyphs site is an

outcrop An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. Features Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial ...

in southwestern

Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ...

with pre-contact Native American

petroglyph A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions ...

s. The petroglyphs are pecked into rock of the Red Rock Ridge, a -long

Sioux quartzite The Sioux Quartzite is a Proterozoic quartzite that is found in the region around the intersection of Minnesota, South Dakota, and Iowa, and correlates with other rock units throughout the upper midwestern and southwestern United States. It was ...

outcrop that extends from

Watonwan County, Minnesota Watonwan County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 11,253. Its county seat is St. James. History In 1849, the recently organized Minnesota Territory legislature authorized the creation of nin ...

Brown County, Minnesota Brown County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 25,912. Its county seat is New Ulm. The county was formed in 1855 and organized in 1856. Brown County comprises the New Ulm, MN Micropolitan ...

. The exposed surface is approximately and surrounded by virgin prairie. "The site lies in an area inhabited in the early historic period by the

Dakota Indians The Dakota (pronounced , Dakota language: ''Dakȟóta/Dakhóta'') are a Native American tribe and First Nations band government in North America. They compose two of the three main subcultures of the Sioux people, and are typically divided into ...

, and both the style and form of some of the carvings are identical with motifs that appear on Dakota hide paintings and their quill designs and

beadwork Beadwork is the art or craft of attaching beads to one another by stringing them onto a thread or thin wire with a sewing or beading needle or sewing them to cloth. Beads are produced in a diverse range of materials, shapes, and sizes, and vary b ...

. Others are foreign to this Plains Indian tradition and seem to be much earlier in origin." Several old wagon trail ruts traverse the site, one of which is believed to be the old stage coach route from

New Ulm, Minnesota New Ulm is a city in Brown County, Minnesota, United States. The population was 14,120 at the 2020 census. It is the county seat of Brown County. It is located on the triangle of land formed by the confluence of the Minnesota River and the Co ...

Sioux Falls, South Dakota Sioux Falls () is the most populous city in the U.S. state of South Dakota and the 130th-most populous city in the United States. It is the county seat of Minnehaha County and also extends into Lincoln County to the south, which continues up ...

.Roefer The exact age of the petroglyphs is not known, but the earliest petroglyphs are estimated to be from 9000 to 7000 years ago (7000 to 5000 BCE). but some

atlatl A spear-thrower, spear-throwing lever or ''atlatl'' (pronounced or ; Nahuatl ''ahtlatl'' ) is a tool that uses leverage to achieve greater velocity in dart or javelin-throwing, and includes a bearing surface which allows the user to store ene ...

symbols at Jeffers are a close match with similar symbols at Indian Knoll in

Kentucky Kentucky ( , ), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States and one of the states of the Upper South. It borders Illinois, Indiana, and Ohio to the north; West Virginia and Virginia to ...

, which have been dated to 3000 BCE during the

Late Archaic Period In the classification of the archaeological cultures of North America, the Archaic period in North America, taken to last from around 8000 to 1000 BC in the sequence of North American pre-Columbian cultural stages, is a period defined by the ''a ...

. Another clue to the age comes from the projectile point carvings, which show a projectile point design used by hunters in the Late Archaic Period. Other carvings, such as thunderbirds, dragonflies, turtles, and

shaman Shamanism is a religious practice that involves a practitioner (shaman) interacting with what they believe to be a spirit world through altered states of consciousness, such as trance. The goal of this is usually to direct spirits or spiritu ...

s, indicate symbols used by later tribes such as the

Otoe tribe The Otoe (Chiwere: Jiwére) are a Native American people of the Midwestern United States. The Otoe language, Chiwere, is part of the Siouan family and closely related to that of the related Iowa, Missouria, and Ho-Chunk tribes. Historically, t ...

Sioux The Sioux or Oceti Sakowin (; Dakota language, Dakota: Help:IPA, /otʃʰeːtʰi ʃakoːwĩ/) are groups of Native Americans in the United States, Native American tribes and First Nations in Canada, First Nations peoples in North America. The ...

, and

Iowa tribe The Iowa, also known as Ioway, and the Bah-Kho-Je or Báxoje (English: grey snow; Chiwere: Báxoje ich'é) are a Native American Siouan people. Today, they are enrolled in either of two federally recognized tribes, the Iowa Tribe of Oklahoma and ...

. These are believed to date between 900 CE and 1750 CE. There are over 4000 American Indian images preserved in the bedrock. The bedrock was flattened and smoothed over by glaciers 14000 years ago. Turtle and man art taken in 1990 detail, Jeffers Petroglyphs - 090539pr (cropped)

Turtle and man art taken in 1990 detail, Jeffers Petroglyphs - 090539pr (cropped)

Several archaeologists have hypothesized theories about the purpose of the carvings. Some hypotheses include the practice of hunting magic, performance of sacred ceremonies, or recording historical events in the lives of warriors, shamans, and chiefs. The exact age and purpose of the carvings is only speculation, not established fact. Meanwhile, some Native Americans view the Jeffers site as sacred ground and a very spiritual place, not merely a site to be studied and speculated upon. Jerry Flute, a Dakota elder, was quoted as saying, "To the contemporary Native Americans who reside in and around the state, effers Petroglyphsis a very spiritual place. It is a place where Grandmother Earth speaks of the past, present and future." The

Minnesota Historical Society The Minnesota Historical Society (MNHS) is a nonprofit educational and cultural institution dedicated to preserving the history of the U.S. state of Minnesota. It was founded by the territorial legislature in 1849, almost a decade before statehoo ...

purchased the site from W. R. Jeffers, Jr. in 1966 and it was added to the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...

in 1970. It is maintained by the Minnesota Historical Society and is open to the public between May and September. The site is bracketed by two important tracts of

tallgrass prairie The tallgrass prairie is an ecosystem native to central North America. Historically, natural and anthropogenic fire, as well as grazing by large mammals (primarily bison) provided periodic disturbances to these ecosystems, limiting the encroach ...

: Rock Ridge Prairie Scientific and Natural Area to the northwest and Red Rock Prairie, a preserve of

The Nature Conservancy The Nature Conservancy (TNC) is a global environmental organization headquartered in Arlington, Virginia. it works via affiliates or branches in 79 countries and territories, as well as across every state in the US. Founded in 1951, The Natu ...

, to the east. Here federally threatened

prairie bush clover ''Lespedeza leptostachya'' is a rare species of flowering plant in the legume family known by the common names prairie lespedeza and prairie bush-clover. It occurs in the Upper Midwest region of the United States. The flowers are creamy-white to ...

is found, as well as

big bluestem ''Andropogon gerardi'', commonly known as big bluestem, is a species of tall grass native to much of the Great Plains and grassland regions of central and eastern North America. It is also known as tall bluestem, bluejoint, and turkeyfoot. Taxon ...

Indian grass ''Sorghastrum nutans'', commonly known as either Indiangrass or yellow Indiangrass, is a North American prairie grass found in the central and eastern United States and Canada, especially in the Great Plains and tallgrass prairies. Description ...

, gray-headed coneflower, Maximilian's sunflower,

cordgrass ''Spartina'' is a taxon of plants in the grass family, frequently found in coastal salt marshes. Its species are commonly known as cordgrass or cord-grass, and are native to the coasts of the Atlantic Ocean in western and southern Europe, north ...

and

coreopsis ''Coreopsis'' () is a genus of flowering plants in the family Asteraceae. Common names include calliopsis and tickseed, a name shared with various other plants. Description These plants range from in height. The flowers are usually yellow wi ...

. The

upland sandpiper The upland sandpiper (''Bartramia longicauda'') is a large sandpiper, closely related to the curlews. Older names are the upland plover and Bartram's sandpiper. In Louisiana, it is also colloquially known as the papabotte. It is the only member ...

, regal fritillary and Poweshiek skipper can be found on these prairies. The visitor center is open from May through September and features hands-on exhibits and a multimedia presentation about the site. Daily natural and cultural history programs are offered about such topics as

archaeology Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscap ...

, how Native Americans made and used the

, a

travois A travois (; Canadian French, from French , a frame for restraining horses; also obsolete travoy or travoise) is a historical frame structure that was used by indigenous peoples, notably the Plains Aboriginals of North America, to drag loads ov ...

and cordage, and

prairie Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the ...

wildlife and plants.

Astronomy at Jeffers Petroglyphs

The Starry Night, Prairie Night event is held annually in the park. During this time the park manager allows amateur astronomers to use the park and facilities. Many amateur astronomers attend this event and several members bring their telescopes and allow, and often encourage, others to share their views of the night sky. This site is valued not only because of its historic nature but also because of its dark night skies. The site is much darker than most populated areas in Minnesota and is rated green by the

Clear Sky Chart Clear Sky Charts (called clocks until February 29, 2008) are web graphics which deliver weather forecasts designed specifically for astronomers. They forecast the cloud cover, transparency and astronomical seeing, parameters which are not forecast ...

References

External links

Minnesota Historical Society: Jeffers Petroglyphs

Friends of the Jeffers Petroglyphs Historic Site
{{Registered Historic Places Archaeological sites on the National Register of Historic Places in Minnesota Minnesota Historical Society Minnesota state historic sites Museums in Cottonwood County, Minnesota Native American history of Minnesota Native American museums in Minnesota Petroglyphs in Minnesota Religious places of the indigenous peoples of North America Protected areas of Cottonwood County, Minnesota National Register of Historic Places in Cottonwood County, Minnesota Quartzite formations

Astronomy at Jeffers Petroglyphs

References

Further reading

External links