I remember seeing this movie when I was really young back in the 80’s. It was about this person/monster that was killing people who went camping on this mountain. I do remember that this mountain had a forest fire at the 20 years before and a young boy was caught in the fire.

What I do remember that after this monster/human killed all the teenagers camping in the woods it took one of the surviging females to its cave at the top of the mountain. The end scene shows the top of some mountain and you hear a baby being born.