The Megalithic Passage Tomb at Newgrange was built about 3200 BC. The mound covers an area of over one acre. It is estimated that the construction of the Passage Tomb at Newgrange would have taken a work force of 300 at least 20 years.

The passage and chamber of Newgrange are illuminated by the winter solstice sunrise. A shaft of sunlight shines through the roof box over the entrance and penetrates the passage to light up the chamber. The dramatic event lasts for 17 minutes at dawn from the 19th to the 23rd of December.

Megalithic mounds such as Newgrange entered Irish mythology as sídhe or fairy mounds. Newgrange was said to be the home of Oenghus, the god of love. The Passage Tomb at Newgrange was re-discovered in 1699 by the removal of material for road building. A major excavation of Newgrange began in 1962; the original facade of sparkling white quartz was rebuilt using stone found at the site.

Newgrange has been designated a World Heritage Site by UNESCO and attracts 200,000 visitors per year.

We read about this in the book called Ireland. It was eerie.