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

Dolaumaen Standing Stone: Luni-solar sets

West centred view with luni-solar trajectories c.1800BCE from Dolaumaen Standing Stone, North Pembrokeshire, Mynachlog Ddu, Wales. Winter cross-quarters are on a hilltop, summer ones at the right end of one. The equinox is on a slope with better marks above and below for its quarter-month brackets.
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© Michael Wilson.