The site of the Sand Creek Massacre is long believed and experienced as a haunted site. On November 29, 1864 over 200 Native Americans (mostly women and children) were brutally massacred by a 700-man force of Colorado Territory militia in southeastern Colorado Territory. US Col. John Chivington ordered his forces to hunt the people as they tried to escape along the Sand Creek, in many cases, as they tried to take shelter in small sand caves.
They were used as target practice, mutilated, and even had body parts amputated before death as trophies. Annually, on the anniversary night of the massacre, campers have reported seeing manifestations of numerous Native women, children, and the occasional warrior, wandering down the Sand Creek bed and banks where they were killed, most appearing only briefly, and then dissolving into the creek’s soil. The location has been designated the Sand Creek Massacre National Historic Site and is administered by the National Park Service.
You can read more on the history of this site here: www.legendsofamerica.com