Hartley Fort State Preserve

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Lua error in Module:Coordinates at line 668: callParserFunction: function "#coordinates" was not found. Hartley Fort State Preserve is a 2-acre (8,100 m2) Iowa state preserve located on the Upper Iowa River in the Driftless Area, in Allamakee County of Iowa, USA.


Hartley Fort State Preserve sits on a terrace about 80 feet (24 m) above the Upper Iowa, seven miles (11 km) upstream of the confluence with the Upper Mississippi River.

Native Americans

The site is notable for remains of a fortified Native American effigy mound settlement. The mound builder people's era ruins seem to be associated with the Woodland period Oneota and Cahokia cultures.


The Iowa Hartley Fort State Preserve land is privately owned, and there is no public access currently.

See also