A Wyoming archaeological site where people killed or scavenged a Columbian mammoth nearly 13,000 years ago has produced yet another discovery that sheds light on the life of these early inhabitants of North America. A Wyoming archaeological site where people killed or scavenged a Columbian mammoth nearly 13,000 years ago has produced yet another discovery that sheds light on the life of these early inhabitants of North America. Archaeology Phys.org – latest science and technology news stories