The First Elephant/Dino Burrow

Dana is at the Museum studying Mammoth fossils when she tells Dad and Saara a fantastical story all about the Cave People that lived among them./There's been a big snowfall and Dana, Saara and Mom are shoveling the driveway when Dana is distracted by a Troodon who has dug a burrow under her tree house. It's up to Dana to figure out why Troodon dig burrows and help Mom with the driveway.