Most researchers believe the first Americans crossed the Bering Strait from Siberia about 15,000 years ago and quickly colonized North America. Artifacts from these ancient settlers, who have been named the Clovis culture after one of the archaeological sites in Clovis, New Mexico, have been found from Canada to the edges of North America. However, a number of discoveries in recent years have challenged the view that the Clovis were the first, and to date, no archaeological evidence of human settlements has ever been found in the Beringian land bridge.