mega-what / prehistoric horizon calendars / Ireland, West Cork, Mizen Peninsula, Toormore

Ratooragh Wedge Tomb: Luni-solar rises

East centred view with luni-solar trajectories c.1800BCE from Ratooragh Wedge Tomb, Cork, Ireland. The equinox is on a top and so is the equinox / summer cross-quarter midpoint. The equinox / winter cross-quarter midpoint is at a basal step and so are the winter cross-quarters. Summer cross-quarters are in a dip and axially indicated.
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© Michael Wilson.