Synopsis

Scattered across the Northeastern United States are some 800 ancient, enigmatic stone structures of human origin. Forensic geologist Scott Wolter journeys into the Pennsylvania countryside to examine one such site: an intricately constructed stone chamber concealed beneath the earth within a dense woodland. As he suspects it may have served as a ritual bathing place for a clandestine society, he begins a search to uncover the builders’ identity, their timeframe, and their purpose.