In a discovery that could rewrite the history of the Americas, archaeologists have found a number of stone tools dating back between 19,000 and 26,000 years, and bearing remarkable similarities to those made in Europe.
All of the ancient implements were discovered along the north-east coast of the USA.
The tools could reassert the long dismissed and discredited claim that Europeans in the form of Christopher Columbus and his crew were the first to discover the New World.
Previous discoveries of tools have only been dated back to 15,000 years ago and prompted many archaeologists and historians to question claims that stone-age man managed to migrate to North America.
But the striking resemblance in the way the primitive American tools were made to European ones dating from the same period now suggests a remarkable migration took place.