I don't remember the movies name.I think that the movie take place from 1970-1980.it is a stone age movie.the movie plot:it about clan women fighting clan men,during the movie I remember that the main character found a secret room after falling down from a mountain and find a raygun.in the end the leader of women and leader or men said that they should not fight anymore.

It sounds an awful lot like the post-apocalyptic movie "America 3000" from 1986. Cheesy fun!