It is one of the well known ancient sites in the world and the most famous of all Irish prehistoric sites. Newgrange was constructed in such a way that at dawn on the shortest day of the year, the winter solstice, a narrow beam of sunlight for a very short time illuminates the floor of the chamber at the end of the long passageway. Between c. 3300 and 2900 BC the Newgrange was originally built.It means that it is over 5,000 years old. According to Carbon-14 dates,it is more than 500 years older than the Great Pyramid of Giza in Egypt, and predates Stonehenge trilithons by about 1,000 years In the Neolithic period, Newgrange continued as a focus of some ceremonial activity. New monuments added to the site has a timber circle to the south-east of the main mound and a smaller timber circle to the west. The eastern timber circle has five concentric rows of pits. The outer row has wooden posts. The next row of pits had clay linings and was used to burn animal remains.