. >> yellowhouse canyon is 200 acres of very rough terrain just outside the city limits of lubbock, texas. in 1870, it's where the comanche indians exchanged their prisoners for horses. 125 years later, the area became known for something else, when some hunters found what looked to be a human skull. >> we treat it as a crime scene, making the assumption that it is a strand of hair. forensic anthropologist dr. harrell gill-king estimated the bones had been exposed to the elements for over a year. one piece of bone called the sacrum indicated the victim was female. >> the shape of the sacrum in females is distinctive. it's much more flared. it's all part of the birth difference between females giving birth and males not. >> the shape of the skull suggested the victim was caucasian, and the cranial sutures were not yet closed, meaning the victim was young, between 18 and 24. the anthropologist also found evidence of knife wounds. >> i think we had one to the shoulder blade, six to the vertebrae, and then another four or five. so, 12 or 13 injuries that we discovered and mapped into the cut

. >> yellowhouse canyon is 200 acres of very rough terrain just outside the city limits of lubbock, texas. in 1870, it's where the comanche indians exchanged their prisoners for horses.