Beringia: The Original Gateway to the Americas (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption New genetic evidence supports the hypothesis that the first people in the Americas all came from northeast Asia by crossing a land bridge known as Beringia. When sea levels rose after the last ice age the land bridge disappeared. Credit Julie McMahon Usage Restrictions Credit required: Julie McMahon. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.