The Upper Fall River Dam—Meet in the Great Hall for a slideshow presentation and take a virtual forest hike with Ed Gregory as he visits an obscure and beautiful section of Gill, MA, the site of the 1886 dam that was built by the Montague Paper Company. The dam was constructed to provide a clean source of water for their use in pulp and paper making. The dam and spillway will be shown before and after the spillway removal in December of 2014.