Then, slowly, it filled her. An urge, like none she had ever known, rose out of her depths, grew in her throat, and burst from her mouth in a primal scream of victory. She did it! At that moment, in a lonely valley in the middle of a vast continent, somewhere near the undefined boundary of the desolate northern loess steppes and the wetter continental steppes to the south, a young woman stood with a bone club in her hand--and felt powerful. She could survive. She would survive.