I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Although smaller than the main Callanish Site the other Callanish stone circles are defnitely worth a visit.
Callnish 3 is a double circle, and Callanish 2 a single circle of larger stones. Both are accessible, although the walk is over what can be boggy and wet ground, so wellies or walking boots are recommended.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 25/10/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.