Other activities are rock climbing on the granite tors and outcrops, some of the well-known venues being Haytor, Hound Tor and The Dewerstone; horse riding, which can be undertaken on any of the common land; cycling (but not on open moorland); and angling for wild brown trout, sea trout and salmon—although much of the river fishing on Dartmoor is privately owned, permits are available for some stretches.