Secret of the Incas is a 1954 American adventure film directed by Jerry Hopper and starring Charlton Heston as adventurer Harry Steele, on the trail of an ancient Incan artifact. The supporting cast features Robert Young, Nicole Maurey and Thomas Mitchell, as well as a rare film appearance by Peruvian singer Yma Sumac. Shot on location at Machu Picchu in Peru, the film is often credited as the inspiration for Raiders of the Lost Ark.