Newly Discovered 22,000-Year-Old Tracks Are First Evidence of Human Transport on Land

If you’ve ever pushed a heavy shopping trolley with a child in tow, you know the challenge of moving loads without help. Now imagine doing that without wheels – 22,000 years ago. That’s exactly what new fossil evidence suggests happened in Ice Age New Mexico. Researchers have uncovered ancient human footprints paired with mysterious drag marks, which they say are the earliest evidence of a hand-drawn cart or sled. This simple wheel-less cart (a “travois”) shows our ancestors were hauling heavy goods thousands of years before the wheel’s invention.

The fossilized tracks were discovered at White Sands National Park in New Mexico, a site already famous for astonishing Ice Age footprints. Matthew R. Bennett of Bournemouth University and his multidisciplinary team have dated these particular tracks to roughly 22,000 years ago, placing them at the end of the last Ice Age. Their findings were published in Quaternary Science Advances.

In recent years, White Sands has yielded several sets of human footprints that push back the timeline of people in the Americas by thousands of years. Traditionally, humans were thought to have arrived there around 15,000 years ago, but these footprints suggest people were present well before that. There is some debate over the exact dating – one reason researchers cautiously say “approximately” 22,000 years – but the evidence is compelling and unprecedented.

What makes footprints so special is the vivid snapshot of life they offer. Unlike stone tools or bones, footprints tell stories, written in mud, of how people lived, hunted, and survived. The White Sands tracks were left on the shores of a long-vanished Ice Age lake. As muddy ground dried and was buried in sand, these ancient steps were preserved in astonishing detail. Decoding those footprints is like reading a diary from the Ice Age – and recently, scientists noticed something odd alongside the human tracks.

While excavating the site, archaeologists found elongated grooves in the sediment running alongside the human footprints. At first glance, they looked like something had been dragged across the mud. In some places there was a single straight groove, and in others there were two shallow grooves side by side, evenly spaced apart.

These grooves stretch on for dozens of meters before disappearing under layers of sediment. Intriguingly, they sometimes cut through the footprints themselves – as if whatever made the drag marks was pulled after the people had stepped there.

The research team quickly made the connection to a known tool: a travois. A travois is a simple sled-like handcart made by lashing two poles into an A-shape, used historically by Indigenous peoples to drag loads across land.

“As such they represent early examples of the handcart or wheelbarrow, but without the wheel”, Matthew Bennett, lead author of the study, said in a statement.

The wooden poles of a travois would leave exactly the kind of parallel tracks now visible in the fossil mud. In fact, the scientists note that a pole or poles used in this fashion is called a travois, and the telltale drag marks in New Mexico match this description perfectly.

Crucially, these drag marks at White Sands occur right next to or over human footprints. The grooves even “clip” some of the footprints along their length, suggesting the user dragged the travois over their own tracks as they went.

In other words, an ancient person likely stepped into the soft mud, then immediately walked back over the same path while hauling a load behind them. This scenario would produce exactly what we see: footprints overlain by a dragged object’s trail. It’s a bit like retracing your steps while pulling a sled.

To be sure of their interpretation, the researchers decided to recreate a travois and test it out. They conducted experiments on muddy flats in Dorset, UK, and in Maine, USA, using wooden poles to drag loads by hand over soft ground.

Sure enough, the pole ends plowed into the mud and left grooves just like those at White Sands. The experiment’s drag marks even cut through the test footprints in the same way, confirming that a human-pulled travois could produce the fossil patterns.

Not only did the grooves match, but the context did too. In the fossil site, the drag marks were always associated with a lot of other human footprints traveling in a similar direction, the study reports, many of which, judging by their size, were made by children. In the same layer of mud, small barefoot tracks cluster around the larger prints.

This paints a remarkable picture: an adult (or adults) walking and pulling a travois, accompanied by a group of children walking alongside and behind. The researchers believe the footprints and drag-marks tell a story of the movement of resources at the edge of the ancient wetland. In that story, adults are hauling something heavy on the travois, while kids tag along – perhaps helping a little, or maybe just underfoot, much as kids are today!

This discovery has huge implications for our understanding of early human technology. The drag-mark and footprint combination at White Sands appears to be a 22,000-year-old example of a human-made transport device.

In the researchers’ words, it likely represents one of the earliest pieces of evidence for the use of transport technology in the archaeological record. It is definitely the earliest direct fossil evidence of land transport, although humans may have transported goods by other means (e.g., on their backs or using rafts) much earlier.

For comparison, the earliest known wheel wasn’t invented until around 5,000 years ago in the Middle East. That means for tens of thousands of years before wheels, people still found clever ways to move heavy stuff. The humble travois was essentially an early handcart or wheelbarrow – just without the wheel.

Archaeologists have long suspected that Ice Age people used sledges or drags, but finding proof is difficult. Although these devices likely played important roles in the lives of ancient peoples, they have low preservation potential in the archaeological record, the research team notes. Wood and fiber rot away over time, leaving almost no trace.

That’s why the new evidence is so important: it’s a direct imprint of the behavior itself, preserved by a fluke of geology. No physical travois was found – and likely none will ever be – but the marks it left in the mud survived. It’s a bit like catching a silhouette of an otherwise vanished invention.

The fact that this happened in North America during the Ice Age also feeds into a larger story. White Sands has already upended the timeline of humans in the Americas by showing people were present around 22,000–23,000 years ago. These new travois tracks reinforce that idea and show that those early people were not just wandering empty-handed – they were carrying heavy loads and likely had a settled purpose.

This suggests a level of organization and ingenuity: if you’re hauling lots of meat or materials, you probably have a destination in mind (a camp or community) and the know-how to fashion tools to make the job easier.

Finally, this discovery highlights how innovative and resourceful our ancestors were. Long before high tech or even the simplest wheel, Ice Age families figured out how to engineer a solution to transport their goods.

The travois may have been simple, but it could have been a game-changer for survival – allowing people to transport more food or belongings in one trip than they could carry on their backs. In a harsh Ice Age environment, that’s a big advantage. These 22,000-year-old tracks are the earliest evidence of people using a “primitive vehicle” to haul things around.

In short, a set of footprints and drag marks in New Mexico have opened a window onto life in the Late Pleistocene. We can almost see it: an Ice Age traveler trudging across wet sand, dragging their makeshift sled, determined kids following close behind. It’s a relatable scene – a parent with hands full, dealing with the eternal task of moving stuff from point A to B. And it’s amazing to think that the essence of that scene played out 22,000 years ago, leaving footprints that speak across the ages to tell us the story.

If you found this interesting, read our report on the 23,000-year-old White Sands footprints that rewrote American history.