Shaft in Africa

Shaft in Africa, is a 1973 film directed by John Guillermin and is the third film in the blaxploitation trilogy of films starring Richard Roundtree as John Shaft. John Guillermin directed and Stirling Silliphant did the screenplay. The cost went up to 2,142,000, but the gross fell to 1,458,000. MGM quickly sold the property to television, but the television series was cancelled after just seven episodes.

Shaft must pass a test before being hired for the job the test involves him surviving in a small, overheated room without water, and a floor covered in deep sand, mimicking the supposed conditions of Africa. Shaft ingeniously covers himself with the sand, thereby avoiding heatstroke and winning the contract from his employer. Shaft must then embark upon a mission to infiltrate and destroy a human trafficking and slavery ring in West Africa and France.

Source: Wikipedia