The Sandwich Notch is a hidden gem in Sandwich that features hiking trails, ample rock climbing/bouldering opportunities, and features a waterfall - Beede falls, with plenty of area to swim. Dogs are allows to use the area.
Hike/drive to Round Pond and explore the hilltop. Most of the boulders near the top of the small hill and the "Balance Boulder" and the warm-up boulder mark the end of the area. All the other boulders between the warm-up and trail have great problems
Hamlin Trail is a 4.5 mile moderately trafficked loop trail located near Meredith, New Hampshire that features a lake and is rated as moderate. The trail is primarily used for hiking. Dogs are able to use this trail