The tracks, which are over 200 million years old, were discovered in the Stelvio National Park, in an area between the towns of Bormio and Livigno.
"This set of dinosaur footprints is one of the largest collections in all of Europe, in all of the world," Attilio Fontana, regional president of Lombardy in northern Italy, said at a press conference.
It was nature photographer Elio Della Ferrera who discovered the prints in a nearly vertical cliff slope in September. Some measured up to 40 centimeters in diameter.
Della Ferrera called in paleontologist Cristiano Dal Sasso from Milan's Natural History Museum, who assembled a team of Italian experts to study the site.
"It is a significant scientific legacy. The parallel walks are clear evidence that herds move synchronously, and there are also traces of more complex behaviors, such as groups of animals gathered in a circle, perhaps for defense," Dal Sasso writes in a press release.
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