The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the natural dangers we are facing. The agency has over 10,000 employees that collect, monitor, and analyze data so that they have a better understanding of our problems. The USGS is dedicated to provide reliable, investigated information to enhance and protect our quality of life. This is one of their bulletins.

"With the long-awaited publication of these three volumes we have the first thorough documentation of one of the most important prehistoric sites in the Mediterranean, that of Franchthi Cave in the Argolid Peninsula of Greece." American Anthropologist

..". the archaeological and paleoenvironmental data from Franchthi Cave are unique in providing a site-specific record of the cultural responses to great environmental changes." Quarterly Research

This volume describes the evolution of the landscape around Franchthi Cave over 25,000 years, its impact on prehistoric inhabitants, and theirs on it."