Courageous, passionate men and women battle for survival of their clans--in the shadow of the great mammoth who speaks with thunder . . . As the massive glaciers fade and the wide seas rise, the warm grasslands of the Americas bring prosperity to the gentle People of the Red World, followers of the Great Ghost Spirit, the White Mammoth. But farther north, where the harsh dry winds howl, another nation, the People of the Watching Star, are enmeshed...