Chief Niwot or Left Hand(-ed) (c. 1825–1864) was a tribal leader of the Southern Arapaho people and played an important part in the history of Colorado. Chief Niwot and his people lived along the Front Range often wintering in Boulder Valley, site of the future Boulder, Colorado. Despite breaching the borders of Arapaho territory — defined by the Fort Laramie Treaty as the area between the North Platte River and the Arkansas River — early prospectors were welcomed by Niwot in Boulder Valley during the Colorado Gold Rush.
(Top) Chief Left Hand (Image found at: http://www.franksrealm.com/Indians/tribes/Arapaho/pages/arapaho-lefthand.htm)
(Bottom) Arapaho camp across Cherry Creek from the gold seekers camp in 1858. (Image found at: http://coloradoencyclopedia.org/article/chief-left-hand-niwot)