The Land Before Time VI: The Secret of Saurus Rock is a 1998 direct-to-video animated adventure musical film and the sixth film in The Land Before Time series about four dinosaurs and a pterosaur who live in the Great Valley. It is the first film in which Thomas Dekker is the voice of Littlefoot. This was the second The Land Before Time direct-to-video film to be produced and directed by Charles Grosvenor.