The massacre site, 16 miles northeast of Pine Ridge town, is marked by a faded sign. It helps to read up on the events before you arrive. The mass grave, often frequented by people looking for donations, sits atop the hill near a church . Small memorials appear daily amid the stones listing dozens of names such as Horn Cloud. It's a desolate place, with sweeping views. An ad hoc timeline on a pillar lists acts of genocide against Native Americans.