The passage of Newgrange on the morning of the Winter Solstice, as the sun retreats down the passage.

Engineering though is only part of picture, astronomers observed the rising sun over many years and marked out the orientation of the passage and chamber to allow its alignment to function. Artists picked the many designs including the celebrated 'triple spiral' inside the rear chamber and on the entrance stone using only stone tools, picking away for many, many hours, days and weeks to create extraorinary artwork still vibrant today even if its original 'meaning' if one existed, has been lost in the intervening millenia.

The passage of Newgrange on the morning of the Winter Solstice, as the sun retreats down the passage.

Engineering though is only part of picture, astronomers observed the rising sun over many years and marked out the orientation of the passage and chamber to allow its alignment to function. Artists picked the many designs including the celebrated 'triple spiral' inside the rear chamber and on the entrance stone using only stone tools, picking away for many, many hours, days and weeks to create extraorinary artwork still vibrant today even if its original 'meaning' if one existed, has been lost in the intervening millenia.