Thirteen (13) fossilized footprints found in a valley in a desert in northern Mexico are considered among the oldest in the Americas, Mexican archeologists observed.
The footprints were believed to be from hunter gatherers who are thought to have resided in the Coahuila valley of Cuatro Cienegas, 190 miles (306 kms) south of Eagle Pass, Texas, thousands of years ago according to archaeologist Yuri de la Rosa Gutierrez of Mexico’s National Institute of Anthropology and History.
The Cuatro Cienegas footprints were discovered last May embedded in a white rock called travertine.  Each footprint is 10 inches (27 cm) long and under an inch (2 cm) deep. They have a distance of 30 feet (10 meters).
It is likely they were imprinted in mud and preserved by some rapid change in the environment, said Arturo Gonzalez, director of the Desert Museum, in the Coahuila state capital of Saltillo.
“There must have been a natural phenomenon to rapidly cover them so they were not rubbed out and were perfectly preserved,” Gonzalez said.
“We believe (the footprints) are between 10,000 and 15,000 years old,” De la Rosa declared Wednesday. “We have evidence of the presence of hunter gatherers in the Coahuila desert more than 10,000 years ago.”
Initial tests have been conducted to determine the age of the prints. More tests will be carried out later on in Mexico and at a laboratory in Bristol in Great Britain.
The oldest discovered footprints in the Western hemisphere are in Chile, and are believed to be 13,000 years old. Three 6,000-year old footprints are found in the U.S. state of California, in Brazil and in Nicaragua.
The oldest known hominid foot marks are found in Laetoli, in Tanzania, and are believed to have been made 3.5 million years ago.

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