A wildlife photographer stumbled upon one of the oldest and largest known collections of dinosaur footprints, dating back about 210 million years to the Triassic Period, high in an Italian national park near the 2026 Milan Cortina Winter Olympic venue of Bormio, officials announced Tuesday.
The discovery in the Stelvio National Park was striking for the sheer number of footprints, estimated at as many as 20,000 over some five kilometers (three miles), and the location near the Swiss border, once a prehistoric coastal area, that has never previously yielded dinosaur tracks, experts said.
