What is the name of this movie?

I wanted to find out this movie i have seen when i was a kid, it was a movie about the "Caveman Cavewoman days" but in the middle of the movie, this one guy from the tribe falls in to a place where he finds a crashed spaceship with technology and stuff, In this movie there was a huge battle between two tribes, woman and men also. Please let me know if anyone knows the name of this movie.