Seneca Mill and Cascade Mill Falls is a 1.6 mile out and back trail located near Penn Yan, New York that features a waterfall. The trail is good for all skill levels and is accessible year-round. 1.6 miles Out & Back hiking waterfall Hide Map AllTrails Terrain Road Satellite Expand Map Sign up now to see this map! ReviewsPhotosTracksNo one has reviewed this trail yet. Be the first!