mega-what / prehistoric horizon calendars / Wales, Carmarthenshire, Pentre Galar / Glandy Cross

Carn Besi Chambered Tomb: 360° N centred

North centred panoramic view with luni-solar trajectories c.1800BCE from Carn Besi Chambered Tomb, Carmarthenshire, Wales. North is on a nearby hilltop. South is in a distant dip. The north-eastern lunistice range spans a hilltop. The north-western lunistice range runs from a hilltop to the edge of another with summer solstice sunset on a prominent top in the middle. The southern horizon is very distant and fairly uniform. Thus the profiles of nearer hills may make more reliable markers in this direction. The intersect of nearer and further horizons indicates summer cross-quarters to the east and winter cross-quarters to the west.
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© Michael Wilson.