The Lost Continent is a 1968 British 'Hammer Film Productions' science fiction adventure film. It features Eric Porter, Hildegard Knef, Suzanna Leigh, Tony Beckley, Nigel Stock, Jimmy Hanley, Victor Maddern, and Michael Ripper. The captain, crew, and passengers of an old freighter, all of them with dark secrets to keep, find themselves adrift in a mysterious land full of monsters, conquistadors, and killer seaweed.