Few places in the world provide as detailed a picture of prehistoric hunters and gatherers as Kentucky's Green River valley. Deep shell heaps along the river have preserved evidence of this culture, which flourished between 4,000 and 1,000 B.C. This booklet describes what archaeologists currently know about these people's way of life, drawing on decades of research by scores of scientists, supported by the good will of local landowners who continue to protect these significant sites