The Plains of Passage - Jean M. Auel

I'm really starting to notice and agree with people, that Jean M. Auel repeats herself too much. Also every time I read the mammoth mating scene I think Elephant Memories: Thirteen Years in the Life of an Elephant Family by Cynthia Moss and the one elephant mating scenes described in it. This time reading through I read the acknowledgments and saw yep, that is were it came from. Besides that I just got tired reading about sex, you don't need to describe it every time.