Beneath the Planet of the Apes (1970)

Beneath the Planet of the Apes is a 1970 American science fiction film directed by Ted Post and written by Paul Dehn. It is the second of five films in the original Planet of the Apes series produced by Arthur P. Jacobs.[3] The film stars James Franciscus, Kim Hunter, Maurice Evans, and Linda Harrison, and features Charlton Heston in a supporting role. Another spacecraft crashes on the planet ruled by apes, carrying astronaut Brent who searches for Taylor and discovers an underground city inhabited by mutated humans with psychic powers. Beneath the Planet of the Apes was a success at the box office but met with mixed reviews from critics. It was followed by Escape from the Planet of the Apes.

For more info click on the link: https://en.wikipedia.org/wiki/Beneath_the_Planet_of_the_Apes