Tracks across time

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<p>In a dry creek bed in the middle of the Australian outback is a palaeontological prize like no other: 95-million-year-old footprints stamped in a sandstone slab by three species of dinosaur. One of the beasts was a massive, lumbering sauropod that measured 18 metres from nose to tail. But the precious trackway is in danger of being damaged by the next floods, so must be moved. In the final episode of the four-part series The Chase, science journalist Belinda Smith from the ABC in Australia discovers what footprints can tell us about the ancient beasts that once roamed this land, and follows a team racing against time and the elements to save this once-in-a-lifetime find. Because even though these tracks have lasted the best part of 100 million years, they may not survive another one.</p><p>Picture: Footprints made by a sauropod as it walked across a mudflat 95 million years ago, Credit: Australian Broadcasting Corporation/Belinda Smith</p>