One man , MacDonald Robertson , often spoke of the time he met Mr Gunn in 1939 .
Alexander Gunn , a local farmer , was on the beach , searching for one of his sheep , when his dog made a startling discovery .
One man , MacDonald Robertson , often spoke of the time he met farmer farmer in 1939 .
Alexander Gunn , a local farmer , was on the beach , searching for one of his sheep , when his dog made a startling discovery .