Resource site for the Megalithic Passage Tombs of Newgrange, Knowth, Dowth, Fourknocks, Loughcrew and Tara located in the present day County of Meath on the east coast of Ireland. The Boyne Valley Cairns at Newgrange, Knowth and Dowth were built around 3200BC making them older than Stonehenge in England and the Pyramids of Giza in Egypt.

The illumination of the passage and chamber at Newgrange
http://www.knowth.com/winter-solstice.htm by winter solstice sunrises is
world famous. Less well known is the illumination of the passage and chamber
at Dowth http://www.knowth.com/dowth-sunsets.htm by winter sunsets.

Dowth http://www.knowth.com/dowth.htm is one of the 3 principle mounds of
the Boyne Valley, Anne-Marie Moroney has been observing winter sunsets at
Dowth since 1997. From the beginning of October to the end of February the
sun sends its rays from the south-west into the chamber. As the sun appears
progressively lower in the sky towards the winter solstice, the beam travels
first over the sill stone, then enters the chamber and finally shines
directly onto the stones at the back of the chamber.

Website references:

Dowth Sunsets  http://www.knowth.com/dowth-sunsets.htm

Newgrange Sunrises http://www.knowth.com/winter-solstice.htm

Wallpaper http://www.knowth.com/background-wallpaper.htm