It's Dinosaurs and a hot, humid prehistoric world in the middle of the ... South Pole? Jim turns his attention to 1957's cult classic, "The Land Unknown," starring Jock Mahoney, Shirley Patterson, William Reynolds, Douglas Kennedy and Henry Brandon. An expedition is trapped in a land that has been frozen in time. Will it find its way back home before winter sets in? It's all ahead on this episode of "Monster Attack!"