The Mammoth Hunters by Jean M. Auel
Leaving the valley of horses with Jondalar, the handsome man she has nursed back to health and come to love, Ayla embarks on a journey that will lead her to the Mamutoi; the Mammoth Hunters. But as she settles into this new life among a people at first strange and disturbingly different, Ayla finds herself irresistibly drawn to Ranec, their master-carver. Ultimately, she is compelled to make a fateful choice between the two men.
Jean Auel's imaginative reconstruction of pre-historic life, rich in detail of language, culture, myth and ritual, has become a set text in schools and colleges around the world.