Precolumbian Era
Era Menu Precolumbian Era: 1 Billion BC - 1500 AD Exploration: 1500 - 1854 Kansas Territory: 1858 - 1861 Douglas County Infancy: 1862 - 1874 Closing the Frontier: 1875 - 1881 Building Douglas County: 1882 - 1899 Agriculture and Ranching: 1900 - 1918 Boom and Bust: 1920 - 1939 Small Town USA: 1940 - 1959 Destruction and Recovery: 1960 - 1979 Growth and Prosperity: 1980 - 2000   Location Menu All Castle Rock Franktown Highlands Ranch and Lone Tree Larkspur Louviers Mountains Parker Roxborough Sedalia Spring Valley, Cherry Valley & Greenland	1,100,000,000 BC     All: Pike's Peak Granite, from which the Rampart Range is composed, is formed. (Bauer: Colorado Post Offices, 1858-1989.: p.27) 54,000,000 BC     All: The area around Castle Rock is a rain forest, receiving up to 100 inches of precipitation per year. (: Douglas County News Press.) 13,000 BC     All: Mammoth, horse, camel, and bison frequent the Lamb Spring area (Heckendorn) 9000 - 8000 BC     Roxborough: Paleo-Indians of the Cody Complex hunt wild game near Lamb Spring. (Heckendorn) 5500 BC - 1300 AD     All: Paleo-Indians live in Douglas County. (Noel: p.43) 1050 AD     All: High plains indians of the Upper Republican Phase settle in the Franktown vicinity as well as lower Jarre Creek. This culture is marked by nacent horticulture and cord-marked creamic jars. IT also seems likely that several sever droughts occured during this period. (Gunnerson: p.65-67)	Douglas County was once a rainforest. Click on the image to see the rainforest in Suriname. Courtesy Marco Bleeker at www.euronet.nl/users/mbleeker/suriname/suri-eng.html Prehistoric peoples living in the Franktown Focus may have used a pot like this one from the Upper Republican Phase. From Archaeology of the High Plains by James Gunnerson.