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Outdoors & Recreation

Cahokia Mounds State Historic Site

30 Ramey Dr, Collinsville, Illinois 62234 USA 618-346-5160

  • Historic Site
  • Place of Worship
  • Scenic Point
  • Nature Reserve
  • Natural Feature
  • Native Culture

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  • Independent
  • Credit Cards Accepted
  • Wheelchair Accessible
  • No Wifi
  • Street Parking
  • Private Parking
  • Restrooms
  • Outdoor Seating

One of the greatest cities of the world, Cahokia was larger than London was in AD 1250.

The remains of the most sophisticated prehistoric native civilization north of Mexico are preserved at Cahokia Mounds State Historic Site. Within the 2,200-acre tract, located a few miles west of Collinsville, Illinois, lie the archaeological remnants of the central section of the ancient settlement that is today known as Cahokia.

According to archaeological finds, the city of Cahokia was inhabited from about A.D. 700 to 1400. At its peak, from A.D. 1050 to 1200, the city covered nearly six square miles and 10,000 to 20,000 people lived here. Over 120 mounds were built over time, and most of the mounds were enlarged several times. Houses were arranged in rows and around open plazas, and vast agricultural fields lay outside the city.The site is named for the Cahokia subtribe of the Illiniwek (or Illinois tribe, a loose confederacy of related peoples), who moved into the area in the 1600s. They were living nearby when the French arrived about 1699. Sometime in the mid-1800s, local historians suggested the site be called "Cahokia" to honor these later arrivals.

Archaeological investigations and scientific tests, mostly since the 1920s and especially since the 1960s, have provided what is known of the once-thriving community. The fate of the prehistoric Cahokians and their city is unknown, but the decline seems to have been gradual, beginning around the 1200s. By A.D. 1400 the site had been abandoned. Exactly where the people went or what tribes they became is yet to be determined.Depletion of resources probably contributed to the city's decline. Climate change after A.D. 1200 may have affected crop production and the plant and animal resources needed to sustain a large population. War, disease, social unrest, and declining political and economic power may have also taken their toll.

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Cahokia Mounds State Historic Site

30 Ramey Dr
Collinsville, Illinois 62234 USA


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Rated 3.0 September 7, 2014

Wear appropriate footwear, cause you're going to be doing a lot of walking. This is a very well-maintained historic site, with plenty to explore. There's also an on-site museum, with very friendly staff.

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Rated 4.0 March 17, 2015

Kind of mysterious hills. Serene and solemn place.

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Rated 4.0 March 1, 2015

Very accessible, beautiful and has an interesting history.

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