Plot synopsis: “Shellmound” is the story of how one location was transformed from a sacred center of pre-historic cultures to a commercial mecca for modern people. What began as a Native American burial ground three thousand years ago, was transformed first into an amusement park, and later an industrial age paint factory. Now, the tainted ancient soil sits beneath the glittering lights of Banana Republic, Victoria’s Secret, and the AMC movie theaters. “Shellmound” examines the decisions made during the recent toxic cleanup, excavation, and construction of the Bay Street mall through the eyes of the city of Emeryville, the developer, the archaeologists, and the native Californians who worked on the site.