mega-what / prehistoric horizon calendars / Ireland, West Clare, Doolin

Doolin Stepped Barrow: Luni-solar rises

East centred view with luni-solar trajectories c.1200BCE from Doolin Stepped Barrow & Standing Stone, Clare, Ireland. The equinox is at the basal step of a hill but the lowest dip is a quarter-month north of it. Summer and winter solstices are in shallow dips.
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© Michael Wilson.