Newgrange Ireland's most impressive passage grave was built about 5,000 years ago, making it 500 years older than the pyramids of Egypt. It was built during the Neolithic period of Irish history. The roof has no central supports. It was built by placing each layer of stone slab slightly sticking out from the one below (corbelled roof). On 21st December each year a burst of light floods the burial chamber through a small opening above the main entrance. This day is known as the winter solstice or the shortest day of the year. It may have been used as a type of calender, reminding farmers that they were half way through winter. Beautifully decorated kerbstones surround the mound showing that the first farmers were indeed artistic people. Click here to learn more!