The Land Before Time VI: The Secret of Saurus Rock

The name of this movie is The Land Before Time VI: The Secret of Saurus Rock released in 1998-12-01 and it's main theme is Legends claim that Saurus Rock keeps bad luck out of the Great Valley. Is it really true? Could the mysterious Longneck named Doc be the famous Lone Dinosaur, who can defeat a Sharptooth with his lasso-like tail? To find out, Littlefoot and company must cross the great Valley and face a dangerous Sharptooth themselves.