Episode Title:The Valley of Time.Episode Description:Captain Leech traps Gary and the gang inside a cave. While looking for a way out an earthquake suddenly strikes and an opening is made in a wall and they are able to escape. Once outside, they find themselves in a prehistoric valley with hundreds of dinosaurs and Gary spots a young boy being swept down the river, rescues him whereupon the boy runs off. Seeing smoke in the distance the group investigates and become prisoners of a clan of cavemen.