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