This hypothesis was confirmed in 1960 when Norse ruins at L’Anse aux Meadows on the northern tip of Newfoundland were found by Helge Ingstad. More recently several sites and lines of evidence have been cited as supporting an even earlier migration of Europeans into the Americas. This hypothesis, called the Solutrean hypothesis, postulates that Upper Palaeolithic peoples from Europe utilizing Solutrean lithic technology migrated into the Americas during the late Pleistocene. Evidence supporting such an argument, however, remains elusive and highly controversial, primarily because the Solutrean ended in Europe at least 5,000 years before the first lithic technology appeared in the Americas. Likewise, archaeological, craniomorphological, and genetic evidence argues against any pre-Columbus European settlements in the Americas that lasted more than a few seasons. For a more indepth discussion of the prehistory of the Americas and the cultural affiliation of American Indians to other groups, I suggest you consult my book “Respect for the Ancestors: American Indian Cultural Affiliation in the American West” (Bauu Press, 2005).