The more than 1.5-kilometer-long trail was made by a young adult carrying a toddler On a day during the late Ice Age, a young adult or teen carrying a toddler hustled across a muddy flat where mammoths and giant sloths roamed. Now, over 10,000 years later, fossilized footprints reveal that possibly perilous journey. The tracks, found in New Mexico’s White Sands National … [Read more...] about The longest trail of fossilized human footprints hints at a risky Ice Age trek
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