I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
The Boscawen-un farm lane, off the A30 is good for short parking, but do so considerately and don't park in the farm yard itself. Footpath from the farm yard takes you to the stone circle. It's a stunning location. Although not in an FRZ, it is extremely close to one; Lands End Airport ATC are extremely helpful if you seek prior permission to fly and notify them before and after your flight.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 07/08/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.