“The monuments lie along lines oriented S. 54° W. → N. 54° E. (54° = azimuth at the solstices for L = 48° 30′ and i = 23° 30′) and N. 54° W. → S. 54° E. Some of them determine lines perpendicular to the meridian.
Fig. 29.—Menhirs of St. Dourzal, D, E, F.
“One menhir (A), 6m. 90 in height and 9m. 20 in circumference, erected in the small island of Melon (canton of Ploudalmézeau, latitude 48° 29′ 05″) a few metres from a tumulus surrounded by the ruins of a cromlech (B and C), has the section such that the faces, parallel and remarkably plane, are oriented N. 54° E. ([Figs. 27] and [28]).
“At 1300 metres in the same azimuth there is a line of three large menhirs (D, E, F), of which one (E) is overthrown. The direction of the line passes exactly by the menhir A. Prolonged towards the N.E. it meets at 3k. 700m. an overturned block of 2m. 50 in height, which is without doubt a menhir; towards the S.W. it passes a little to the south some lines of the island of Molène.... ([Fig. 29]).
Fig. 30.—Alignment at Lagatjar, G G′.
“There exists in the neighbourhood other groups, forming also lines of the same orientation and that of the winter solstice. It is advisable to remark that orientations well determined for the solstices are much less so for the equinoxes, which is natural, the rising amplitude varying very rapidly at this time of year.
“The same general dispositions are to be found in the complex monuments of the peninsula of Crozon. I take for example the alignments of Lagatjar. Two parallel lines of menhirs, G G′ H H′, are oriented to S. 54° E. and cut perpendicularly by a third line, I I′. There existed less than fifty years ago a menhir at K, 6 metres high, which is to-day broken and overturned. This megalith, known in the country by the name of ‘pierre du Conseil’ (a bronze axe was found underneath it) gives with a dolmen situated near Camaret the direction of the sunrise on June 21 ([Fig. 31]).
