Meet at Gerlach Park in Ossining, for a moderate 5-mile round trip from the Park to the historic Croton Dam. Walk on the Old Croton Aqueduct trail to the Dam and return via small Croton River shoreline trail and the Aqueduct. Highlights include views of the scenic Croton River Gorge; and vistas of the Croton Reservoir from the top of the Dam and its unique spillway/natural waterfall. The leader will relate history of the Dam and the Aqueduct (completed in 1842 to bring water to New York City) and local lore along the route. Enjoy snacks (bring your own) in Croton Gorge Park at the foot of the Dam. Expected completion time is 12:30 pm. Gerlach Park is a short taxi ride from the Croton-Harmon Metro-North train station. Heavy rain cancels. Contact firstname.lastname@example.org to make reservations and receive detailed meet-up location.