Highly eroded granite tors are a feature of Dartmoor. This one, just off the main road near Princetown stands on the edge of a valley.
More typically, these tors form the peaks of the hills which go up to just over 2,000ft.
Vixen Tor is presently off limits to walkers & climbers and has become a very contentious issue with the Right To Roam people.
Amongst other access issues, apparently the landowner would have to pay an expensive insurance in case someone got injured there.
It's very sad that people in the 21st century are excluded from this beautiful place.