Some months ago a friend wrote to me about a story her father had told her of an astonishing occurrence one September morning, years ago, on the summit of that hill. – The sun rose through the gate of the monument and illuminated the inside. What a sight to behold and one, of course, I would like to witness with my own eyes. But cursed are the Gods of the sky. The sun did not last long enough and clouds and fog moved in at the very moment of this event and I can not say with certainty if the gate is aligned to the autumn equinox. Captain Boyle Somerville thought Grianan might be aligned to the sun rise at Halloween.
Hopefully it will be possible to find out.