Wounded Knee Monument is a burying ground for those who were massacred at Wounded Knee, Pine Ridge, Oglala Lakota County, South Dakota. Wounded Knee, hamlet and creek on the Pine Ridge Indian Reservation in southwestern South Dakota, U.S. It was the site of two conflicts, in 1890 and 1973, between Native Americans and the U.S. federal government. On December 29, 1890, approximately 150–300 ...