Folkert Mound Group

Folkert Mound Group
U.S. National Register of Historic Places

Simple outline of the mound group, linears/compounds in green, conicals in orange, cruciform in red.

Location:	Hardin County, Iowa, USA, near Steamboat Rock, Iowa
Governing body:	State
NRHP Reference#:	^[1]
Added to NRHP:	March 17, 2009

Main article: Iowa archaeology

The Folkert Mound Group of Hardin County, Iowa is a collection of 27 prehistoric mounds on the bluffs above the Iowa River, in a variety of shapes, including linear, compound, conical, and an enigmatic cruciform mound.

The earliest map of the mounds was made by John Hotopp in 1974^[2], and the mound group was mapped in detail in 2006.^[3]

History

The alignment of the cruciform mound is especially interesting to researchers.^[4] Horton^[5] felt the cruciform mound aligned with the 11th century Crab Nebula supernova. However Lensink^[6] felt there was little evidence of this possible alignment. An apparent alignment of the largest conical mound, A, in the south with the end peaks of the cruciform mound, X, and an alignment between Mound X and the end of longest mound, T, has been postulated, but the meaning of these alignments is unknown.^[7]

References

^ "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13. http://nrhp.focus.nps.gov/natreg/docs/All_Data.html.
^ Hotopp map of 13HA30, 1974, on file, Office of the State Archaeologist, Iowa City.
^ Collins and Whittaker (2007) Digital Mapping and Ground-Penetrating Radar Survey of the Folkert Mound Group (13HA30), Hardin County, Iowa. Contract Completion Report 1395. Office of the State Archaeologist, University of Iowa, Iowa City.
^ Collins and Whittaker (2007) Folkert Mound Group Revealed: Restoration and Non-Destructive Mapping of Hardin County Mounds. Newsletter of the Iowa Archaeological Society 57(1):10, http://www.uiowa.edu/~osa/IAS/central/Spring2007.pdf
^ Horton (2007) A Star Explodes! A.D. 1054: Did Prehistoric Native Iowans Witness and Record this Titanic Stellar Event? Newsletter of the Iowa Archaeological Society 57(3):1-2.
^ Lensink (2007) Newsletter of the Iowa Archaeological Society 57(3):2.
^ Collins and Whittaker (2009) Alignments at the Folkert Mound Group. Newsletter of the Iowa Archaeological Society 59(1):1-2

Pre-Columbian North America

Archaeological cultures	North American pre-Columbian chronology – Adena – Alachua – Ancient Pueblo (Anasazi) – Baytown – Belle Glade – Buttermilk Creek Complex – Caborn-Welborn – Calf Creek – Caloosahatchee – Clovis – Coles Creek – Deptford – Folsom – Fort Ancient – Fort Walton – Fremont – Glades – Glacial Kame – Hopewell (List of Hopewell sites) – Hohokam – Leon-Jefferson – Mississippian (List of Mississippian sites) – Mogollon – Monongahela – Old Cordilleran – Oneota – Paleo-Arctic – Paleo-Indians – Patayan – Plano – Plaquemine – Poverty Point – Prehistoric Southwest – Red Ocher – Santa Rosa-Swift Creek – St. Johns – Steed-Kisker – Tchefuncte – Tocobaga – Troyville

Archaeological sites	Angel Mounds – Bandelier National Monument – The Bluff Point Stoneworks – Cahokia – Chaco Canyon – Casa Grande – Coso Rock Art District – Eaker – Effigy Mounds National Monument – Etowah Indian Mounds – Eva – Folsom Site – Fort Ancient – Fort Center – Gila Cliff Dwellings National Monument – Holly Bluff Site – Hopewell Culture National Historical Park – Kincaid Mounds – Kolomoki – Manitou Cliff Dwellings – Marksville – Meadowcroft Rockshelter – Mesa Verde – Moorehead Circle – Moundville – Mummy Cave – Nodena Site – Ocmulgee National Monument – Old Stone Fort – Parkin Park – Pinson Mounds – Portsmouth Earthworks – Poverty Point – Pueblo Bonito – Rock Eagle – Rock Hawk – Salmon Ruins – Serpent Mound – Spiro Mounds – SunWatch – Taos Pueblo – Toltec Mounds – Town Creek Indian Mound – Winterville

Miscellaneous	Ballgame – Black drink – Buhl woman – Calumet – Chunkey – Clovis point – Container Revolution – Eastern Agricultural Complex – Eden point – Effigy mound – Falcon dancer – Folsom point – Green Corn Ceremony – Horned Serpent – Kennewick man – Kiva – Metallurgy – Mi'kmaq hieroglyphic writing – Medicine wheel – Mound builders – N.A.G.P.R.A. – Norse colonization of the Americas – Piasa – Pueblo dwellings – Southeastern Ceremonial Complex – Three Sisters agriculture – Thunderbird – Underwater panther

Related: Genetic history · Indigenous Portal of North America · Pre-Columbian era

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