mega-what / prehistoric horizon calendars / Wales, North Pembrokeshire, Mynachlog Ddu

Rhos Fach Stone Pair: Luni-solar rises

East centred view with luni-solar trajectories c.1800BCE from Rhos Fach Standing Stone Pair, Mynachlog Ddu, Pembrokeshire, Wales. The equinox is at the left end of a hilltop. Winter and summer cross-quarters are at the right base of hilltops. Solstices are in dips.
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© Michael Wilson.