In 1858, following Niwot's return from the United States, a group of gold-seekers led by Captain Thomas Aikens set up an outpost near Boulder Creek, very close to the Arapaho's winter camp. Niwot and other prominent members left their encampment near Valmont Butte to meet the prospectors.Morley, Judy Mattivi. "Our People: Southern Arapahos Are Part of Boulder's Spirit", Boulder Magazine', 2005. Accounts of the encounter between Aikens and the Arapaho Chiefs differ. Members of Aikens party allege that Niwot permitted them to stay in the area, while other accounts argue that Niwot asked Aikens to leave immediately, as he could not guarantee the prospectors' safety. It is generally accepted that some Arapaho leaders, concerned by the proximity of white settlers to their winter grounds, were hostile to Aikens, while Niwot urged peace between the two groups.
