A team of scientists from the US Geological Survey has discovered a human footprint in New Mexico that is more than 20,000 years old, BBC reports.
The topic of when the American continent first settled from Asia has been controversial for decades.
Moreover, many researchers are skeptical of reports that humans in America appeared much earlier than 16,000 years ago.
Now, a team of scientists working in New Mexico has discovered the footprints of many people, ranging in age from 21,000 to 23,000.
The trails were found on a shallow, now dry lakeshore, in the sand, located in White Sands National Park.
Given the size of these trails, researchers believe they were mostly made by adults and younger children, who at the time assisted adults in hunting.