Growing acceptance that the Neolithic and early Bronze age people who lived on the western shores of the British Isles and of Brittany set up their stone alignments with a precision and purpose hitherto unsuspected (Ref. 1) perhaps permits the collection of data that suggests a way in which they may have been used.
Many of the assemblages can now be identified as serving some astronomical purpose but others do not have any obvious connection with sun or moon and it is with these that this note is particularly concerned.
Observation of the circle at Gors Fawr in the Prescilly mountains created the impression that two large outliers in the north east quadrant aligned on the two ends of a distinctive rocky outcrop on the horizon. These two alignments have no obvious astronomical importance but they are the true bearings from the beach at Newport (Pemb.) of the bays of Aberdavon and Porth Neigal on the southern tip of the Lleyn peninsula.