https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Outlet_of_Erie_Canal%2C_Rollway_Mountain_in_the_distance%2C_from_Robert_N._Dennis_collection_of_stereoscopic_views.png/120px-Outlet_of_Erie_Canal%2C_Rollway_Mountain_in_the_distance%2C_from_Robert_N._Dennis_collection_of_stereoscopic_views.png