Thousands of 210-Million-Year-Old Dinosaur Footprints Discovered in Italian Alps

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In a breathtaking archaeological breakthrough, thousands of dinosaur footprints dating back approximately 210 million years have been uncovered in Italy's Stelvio National Park. This massive track site, one of the largest and oldest in Europe, offers a rare glimpse into the lives of ancient prosauropods during the Triassic period.



The discovery was made by wildlife photographer Elio Della Ferrera in September 2025 while he was capturing images of deer and vultures in the remote Fraele Valley. What caught his eye was a series of unusual patterns on a near-vertical rock wall, high above the nearest road. Upon closer inspection with a telephoto lens, he realized he had stumbled upon an immense collection of fossilized footprints.

Paleontologists, led by Cristiano Dal Sasso from Milan's Natural History Museum, confirmed the find as extraordinary. Estimates suggest up to 20,000 individual footprints spread across several kilometers on steep dolomite rock faces. Some prints measure up to 40 cm (15 inches) in diameter, with clear impressions of toes and claws visible in the best-preserved examples.

The Dinosaurs Behind the Tracks

Experts attribute most of the footprints to prosauropods – early herbivorous dinosaurs characterized by long necks, small heads, and bipedal locomotion. These creatures are considered ancestors of the massive sauropods that dominated the Jurassic period, such as Brontosaurus and Diplodocus.

Reaching lengths of up to 10 meters (33 feet) and weighing as much as 4 tons, these prosauropods resembled the well-known Plateosaurus. The tracks indicate they moved in herds, walking at a calm, rhythmic pace without signs of running. Intriguingly, some formations show circular patterns, possibly indicating protective behavior where the group huddled together.

There are also hints of tracks from predatory dinosaurs and archosaurs (crocodile ancestors), suggesting a diverse ecosystem. This mix provides valuable evidence of social behavior and interactions among Late Triassic species.

A Window into the Triassic World

During the Late Triassic period (around 210 million years ago), the area that is now the high Alps was a vast tidal flat bordering the ancient Tethys Ocean. The warm, shallow coastal environment was ideal for dinosaurs, allowing them to leave impressions in soft mud that hardened over time.

Tectonic forces during the formation of the Alps uplifted and tilted these sedimentary layers, turning horizontal tidal flats into the dramatic vertical walls seen today. This geological upheaval preserved the tracks in remarkable detail, hidden in plain sight until Della Ferrera's accidental discovery.

"This place was full of dinosaurs; it's an immense scientific treasure," said paleontologist Cristiano Dal Sasso. He described the site as one of the most spectacular he's encountered in 35 years of research, emphasizing how reality has surpassed imagination.

Significance of the Discovery

This track site ranks among the world's largest and richest from the Triassic era. Unlike bone fossils, footprints (known as ichnofossils) reveal direct evidence of behavior: how animals moved, interacted, and responded to their environment.

The parallel rows of tracks show herds moving in synchrony, while variations in stride suggest calm grazing rather than flight from predators. Occasional handprints indicate moments when the dinosaurs rested on all fours.

The location's proximity to Bormio – a venue for the 2026 Milan-Cortina Winter Olympics – adds a modern twist to this ancient story. As Attilio Fontana, president of the Lombardy region, noted, it's one of the largest dinosaur footprint collections in Europe and the world.

Challenges and Future Research

The site's remoteness and steep terrain make traditional fieldwork difficult. Currently covered in snow during winter, access is limited. Researchers plan to use drones, remote sensing, and photogrammetry to map and study the tracks without direct physical intervention.

This non-invasive approach will help preserve the fragile fossils while allowing detailed 3D modeling. Future studies may reveal more about dinosaur migration patterns, population dynamics, and the paleoecology of this prehistoric coastline.

Why Dinosaur Footprints Matter

Dinosaur footprints are more than just marks in stone – they are snapshots of daily life from a world long gone. While skeletons tell us about anatomy, tracks reveal movement, speed, and social structures. Sites like this bridge the gap between paleontology and archaeology, showing how these giants navigated their world.

In an era of rapid climate change, such discoveries also remind us of Earth's dynamic history. The tropical lagoons of the Triassic gave way to towering mountains through millions of years of geological transformation.

Elio Della Ferrera, the discoverer, hopes the find will inspire reflection: "It highlights how little we know about the places we live in – our home, our planet."

Conclusion

The Stelvio National Park dinosaur track site stands as a testament to the enduring mysteries of our natural world. From accidental discovery to global scientific treasure, it connects the prehistoric past with the present, just miles from future Olympic glory.

As research continues, this "valley of dinosaurs" promises to yield more secrets about life 210 million years ago, enriching our understanding of evolution and the ancient ecosystems that shaped our planet.

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