Loughcrew Spring Equinox 2004

Loughcrew Cairn T - sunrise 22nd March 2004

Loughcrew Cairn T at sunrise on March 22nd 2004

This image photographed inside Cairn T at 6:51am shows the shaped beam of equinox sunlight illuminating the back stone. Over a period of about 30 minutes the beam moves to the bottom right corner of the backstone.

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This image photographed at 7:15am shows the beam of equinox sunlight illuminating the bottom right corner of the backstone.

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This image photographed at 7:18am shows the last of the sunbeam on the backstone, the stones to the right of the back recess are now illuminated. There is a sun symbol at the bottom of the stone in the centre of the image.

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Monasterboice
Hill of Tara
Bective Abbey
Trim Castle

Equinox Sunrise at the Gossan Stones

Video of Spring Equinox illumination

The equinox sunrise at Cairn T viewed from inside the chamber.

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Light Years Ago by Tim O'Brien shows that the symbols of the sun engraved on the backstone of Cairn T at Loughcrew are precisely positioned to measure solar movement. A beam of light from the rising sun around the time of the March and September equinoxes is mapped on the backstone.

Boyne Valley Tours

Private Tour with pick up and return to your accommodation. Newgrange World Heritage site, the 10th century High Crosses at Monasterboice, Hill of Tara the seat of the High Kings, Bective Abbey and Trim Castle the largest Norman castle in Ireland More ...

Boyne Valley Day Tours