The Secretary of the Interior hereby announces that sufficient lands have been acquired to establish the Sand Creek Massacre National Historic Site in Kiowa County, Colorado. Public Law 106-465 called for the Secretary of the Interior to establish the Sand Creek Massacre National Historic Site once the Secretary had determined that sufficient lands had been acquired by the federal government to provide for the preservation, memorialization, commemoration, and interpretation of the Sand Creek Massacre. The Act authorized the National Park Service to acquire up to 12,500 acres from willing sellers for this purpose. Between 2002 and 2004 the United States acquired 920 acres within the authorized boundaries. On September 9, 2006, pursuant to Public Law 109-45, the Sand Creek Massacre National Historic Site Trust Act of 2005, the Cheyenne and Arapaho Tribes of Oklahoma conveyed to the United States title to 1465 acres within the authorized boundaries to be held in trust for the purposes of the Sand Creek Massacre National Historic Site. With this conveyance, the United States has acquired a sufficient amount of the nationally significant resources that are integral to the preservation, commemoration and interpretation of the Sand Creek Massacre.
I don't know the details and I'm suspicious of anything Interior is behind -- particularly with regard to the tribes! -- but it is nice to know whitey is finally beginning to own up to some of his history here at least.