12 of the World’s Most Mysterious Monuments & Ruins
Newgrange is a 5,200 year old passage tomb located in the Boyne Valley in Ireland's Ancient East. Newgrange was built by Stone Age farmers, the mound is 85 meters (93 yards) in diameter and 13.5 meters (15 yards) high, an area of about 1 acre. A passage measuring 19 meters (21 yards) leads into a chamber with 3 alcoves. The passage and chamber are aligned with the rising sun at the Winter Solstice. Newgrange is surrounded by 97 large stones called kerbstones some of which are engraved with megalithic art; the most striking is the entrance stone.