The Solutrean hypothesis about the settlement of the Americas claims that people from Europe may have been among the earliest settlers of the Americas. Its notable recent proponents include Dennis Stanford of the Smithsonian Institution and Bruce Bradley of the University of Exeter. This hypothesis contrasts with the mainstream archaeological orthodoxy that the North American continent was first populated by people from Asia, either by the Bering land bridge (i.e. Beringia) at least 13,500 years ago, or by maritime travel along the Pacific coast, or by both.
According to the Solutrean hypothesis, people of the Solutrean culture, 21,000 to 17,000 years ago, in Ice Age Europe migrated to North America by boat along the pack ice of the north Atlantic Ocean. They brought their methods of making stone tools with them and provided the basis for the later (c. 13,000 years ago) Clovis technology that spread throughout North America. The hypothesis is based on similarities between European Solutrean and Clovis lithic technologies.
Supporters of the Solutrean hypothesis refer to recent archaeological finds such as those at Cactus Hill in Virginia, Meadowcroft Rockshelter in Pennsylvania, and Miles Point in Maryland as evidence of a transitional phase between Solutrean lithic technology and what was later to become Clovis technology.
In 2009, anthropologist David J. Meltzer criticized the hypothesis, stating, "Few if any archaeologists—or, for that matter, geneticists, linguists, or physical anthropologists—take seriously the idea of a Solutrean colonization of America."