White Sand National Park in New Mexico was previously found to have a "ghost footprint," which has been confirmed by recent studies to be a human footprint from 21,000 to 23,000 years ago, meaning that humans arrived in the Americas during the last Ice Age.
Fossil footprints of White Sands National Park.
According to NBC NEWS, wildlife scientist David Bustos discovered these "ghost footprints" when he visited White Sands National Park in New Mexico in 2005, and only when the ground is wet enough, the footprints appear on the ground and disappear again when they dry up.
It wasn't until 2016 that scientists confirmed that the footprints were human footprints, and now some of them have been confirmed to be left 21,000 to 23,000 years ago, making them the earliest human footprints to appear in North America. #Anecdotes#
Footprints that appear from time to time.
The journal Science yesterday published a study by Bustos, which mentions the discovery of ancient aquatic plant seeds in the upper and lower hard soils of the footprints of the White Sands National Park and the confirmation of the age by radiocarbon dating.
One of the footprints is identified as the earliest known footprint in the Americas and the oldest evidence of human life in the Americas, and matthew Bennett, a professor of environmental and geographical sciences at the University of Bournemouth in the United Kingdom, otherwise the study's lead author, notes that any human remains are controversial, "but footprints are very clear evidence" and that humans arrived in the Americas during the last Ice Age.
Thomas Urban, an archaeologist at Cornell University who co-authored the study, said that the human footprints mixed with animal trails represented that humans had lived there for at least 2,000 years, meaning that humans had been present in the area during the last ice age, not a single event.
