Solving the mystery of a dinosaur mass grave at the 'River of Death'

A mass dinosaur grave unearthed at Pipestone Creek in Alberta, Canada, known as the "River of Death," holds clues to a 72-million-year-old mystery of how thousands of dinosaurs died. Palaeontologists, led by Professor Emily Bamforth, are uncovering a treasure trove of Pachyrhinosaurus fossils, part of a colossal herd that likely perished in a catastrophic event, possibly a flash flood. The ongoing excavation is featured in the BBC's Walking With Dinosaurs series, shedding light on the ancient ecosystem and revealing new insights into dinosaur biology and community dynamics.