Spring Equinox at Grianán

On March 22, 2013 by admin

The alignment of the monument, know as Grianán of Aileach, to the rising sun at the equinoxes was observed again on March 21.  That the monument was aligned to two important dates, spring and autumn equinox, in the calendar had gotten somehow lost from the memory of the people of Inishowen and was re-discovered last year by a member of the heritage group.
In the early hours of the morning a beam of light stretches through the entire inside of the Grianán, reaching the wall opposite the gate and literally dividing it into a southern and northern half. The display lasts for over half an hour with the beam moving with the journey of the sun and becoming shorter as a result.

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