Banner: Knocknarea at Sunset.
A coloured postcard showing Bob and Anne Hickey, who were both caretakers at Newgrange for many years.
A coloured postcard showing Bob and Anne Hickey, who were both caretakers at Newgrange for many years.

The Great Mound at Newgrange

The modern aspect of New Grange, as the visitor approaches it from the road, is far less impressive than it was in the time when it was a centre of religious cult. It now presents the appearance of an irregular mound, overgrown with trees which obscure its outline and which have seriously injured its integrity. Its height is 44 feet, but to judge from the accumulation of debris at the bottom, fallen from the top and sides it must have been originally about ten feet higher.

There is reason to believe that, when new, it was a shapely hemispherical mound of stones, the entire surface of which was covered with a layer of broken fragments of quartz. These must have been conveyed from a considerable distance; and the effect which they produced, as they sparkled in bright sunshine, must have been very striking. The mound would by this means be rendered conspicuously visible from a long distance.

Penny Guide to Newgrange, R. A. S. Macalister, 1929.

Newgrange is the most famous ancient monument in Ireland. Along with the two similarly massive neolithic passage-graves, Knowth and Dowth, the great cairn of Newgrange was constructed on a low ridge overlooking the River Boyne, about sixteen kilometers inland from the mouth of the river, a location which was reached by the full tides during the neolithic. Newgrange is justly world famous for the engraved neolithic art carved onto many of the structural stones, and the alignment of the passage and chamber to the position of sunrise on the winter solstice.

The first drawing of Newgrange by John Antis, 1699, showing the mound to be a huge truncated cone of stone with a standing stone at the summit.
An early drawing of Newgrange by John Antis, showing the mound to be a huge truncated cone of stone with a standing stone at the summit.

Recent research by Lara Cassidy and Dan Bradley has analysed samples of the neolithic human remains discovered in the right-hand recessof Newgrange during Michael O'Kelly's excavations, opening up a new era in Irish Archaeological studies. Genetic material analysed in a large study showed that an individual buried in Newgrange was descended from people buried in both Carrowmore and Carrowkeel in County Sligo.

Newgrange from an old engraving.
Newgrange about 1790, from an old book engraving when not so many trees grew on the monument, with a clear pathway to the Entrance. Source: NLI.

The great cairn of Newgrange has long fascinated visitors of all kinds: authors, artists, researchers, mystics, poets, anthropologists and archaeologists. The monument first gained public attention after a visit by the eminent antiquarian Edward Lhuyd in December 1699, shortly after the accidental discovery of the Entrance Stone during quarrying. A list of the many famous antiquarians and archaeologists who have investigated the monument is detailed on my history of Research at Newgrange page.

The Cairn

The core of Newgrange is a massive heart-shaped cairn, an artificial hill of water-rolled stones, ninety meters in diameter contained within a ring of ninety-seven kerbstones, which surround and contain the base of the cairn. Newgrange is constructed in a commanding position on a glacial ridge 61 meters above sea level. The mound was originally built in the form of a truncated cone—much like Queen Maeve's Cairn at Knocknarea in County Sligo (above). Old illustrations of Dowth, Heapstown cairn and both monuments on Carns Hill in County Sligo, all unexcavated and largely undisturbed, show the same general external form.

Queen Maeve's cairn on the summit of Knocknarea by Robert Welch.
Queen Maeve's cairn on the summit of Knocknarea in County Sligo gives an idea of what Newgrange might have looked like before quarrying and restoration.
Photograph by Robert Welch, © NMNI.

The cairn material, water-rolled stones and boulders, which were used to build Newgrange would have been sourced and carried up from the flood-plain of the Boyne below the enormous monument. It has been estimated that the cairn contains some 200,000 tons of material, a massive collection of rounded stones and gravels, which appears to have collapsed shortly after its last phase of aggrandisement towards the end of the neolithic. The remains of an earlier monument, perhaps a passage-grave about forty meters in diameter, is believed to account for the large bulge in the cairn on the northern side, oppisite the entrance to Newgrange.

Newgrange from an old engraving.
Visitors at Newgrange about 1890.

The east face of the cairn, particularly the area around the Entrance Stone, was covered with chunks of glistening white quartz. The quartz, which would have given the monument a spectacular appearance, would have been transported by boat from the Wicklow Mountains, the closest source, eighty kilometers to the south. Excavator Michael J. O'Kelly found the quartz in a thick layer on the old ground surface and decided he had uncovered a collapsed vertical wall or revetment, to contain the cairn material. The modern facade at Newgrange, supported by a massive concrete wall, caused the back of the cairn to burst in the late 1980's and early 1990's, requiring rescue excavations. The authenticity of O'Kelly's wall is regarded as highly suspect by many modern archaeologists.

William Wakeman's plan and section of Newgrange, around 1880.
William Wakeman's plan and section of Newgrange, published around 1880, shows the mound as a huge truncated cone. Wakeman has filled in the missing stones to show a complete stone circle around the cairn.

The Great Circle

The remains of a huge stone circle surrounding Newgrange, and a large timber woodhenge discovered during excavations, are both believed to date to the Bronze age period, demonstrating that the the monument continued to be regarded as an important sacred site long after the neolithic time was over. Michael O'Kelly, who envisioned a pristine neolithic archaeological horizon, used to refer the bronze age people at Newgrange as squatters. If the circle was ever complete, which is considered doubtful, there may have been as many as thirty-six stones in the complete ring.

A photo from the excavation of the  pit circle demonstrates that the Woodhenge pre-dates the great stone circle. Picture © Con Brogan.
A photo from the excavation of the pit circle demonstrates that the Woodhenge pre-dates the great stone circle. Picture © Con Brogan.

Twelve huge standing-stones remain today, the four largest arranged in front of the entrance area. During excavations the sockets of missing stones were not discovered, and there is some doubt as to whether the circle was ever complete. At least one of the stones was damaged by fire, damaged during some long lost historical incident. Traditionally the Great Circle was considered to date from the Bronze age, several hundred years after the neolithic horizon, but recent research by Ken Williams is suggesting that the Great Circle is neolithic,

The entrance to Newgrange by Robert Welch.
An early image of Newgrange by the Belfast photographer Robert Welch. A path has been worn to the 'false lintol' or roof-box stone, above and to the right of the Entrance Stone.
Photograph by Robert Welch, © NMNI.

Inside Newgrange

The gentleman of the village observing that under the green turf this mount was wholly composed of stone, and having occasion for some, employ'd his servants to carry off a considerable parcel of them; till they came at last to a very broad flat stone, rudely carved, and placed edgewise at the bottom of the mount. This they discover'd to be the door of a cave, which had a long entry leading into it. At the first entering we were forced to creep; but still as we went on, the pillars on each side of us were higher and higher; and coming into the cave, we found it about 20 foot high.

Edward Lhuyd, 1699.

The formidable barrier of the Entrance Stone marks the doorway leading into the interior of Newgrange. This stone, carved with an elaborate composition based around the triple spiral motif, marks the boundary between the World of the Living and the Land of the Dead. A long narrow passage leads off up the hill and into the darkness. In the neolithic, it highly likely that only certain individuals were allowed to enter the interior. One visitor, believed to be Young Ireland leader Thomas Davis, described his navigation of the passage in an account published in the Freeman's Journal in 1844:

The passage, fifty feet long, is so choked with stones, that it is only by lying on the back, feeling one’s way with the feet, and pushing one’s self forward with the hands, that it is possible to get forward; and as the whole way runs over sharp-cornered flint stones, the most disagreeable slide that a man can look for in any part of the world. The side walls of the passage are formed of large stones, tolerably flat, with similar stones laid across them to form the top.

The Newgrange passage is nineteen meters long, and lined with a series of orthostats or standing stones many of which bear remarkable neolithic engravings.

The passage at Newgrange bt W. A. Green.
The passage at Newgrange by W. A. Green shows how the passage-stones or orthostats have leaned inwards over time. Photograph © NMNI.

Things had improved somewhat by 1897, when this account was published in the Belfast Newsletter:

We were advised to pin up our skirts, and we obeyed; were given candles; told to stop and enter a low tunnel like passage after the conductor, who, to our amazement and horror, dropped on his knees and crawled along a short and still narrower passage; but nothing daunted we did likewise. Just imagine crawling along, holding a lighted candle in one hand! No wonder we had been told to pin our skirts up. It sounds very bad, but is not really so, and the excitement carries one on.

It is believed that the passage was built in two distinct phases, with the inner section leading to the chamber being the original structure, the outer section with the roof-box structure being a later addition. The roof-corbels covering the passage rise with the slope of the hill. Many of the corbels were carved with grooves and chanels on their upper surfaces to allow rainwater to run off, keeping the interior dry.

The Chamber

The passage leads into the inner chamber, a massive man-made cave covered by a corbelled vault constructed of huge overlapping flags, which has kept the interior dry for over 5,000 years. The chamber measures six by six meters, and the capstone of the corbelled roof is six meters above the floor, creating a massive sense of space within the mound. The chamber is constructed in a cruciform or cross-shape, formed by eleven huge orthostats which are between two and three meters tall.

The chamber of Newgrange by W. A. Green.
The chamber of Newgrange, photographed by W. A. Green, shows the granite basin in the centre of the chamber and containing liquid. This basin was moved a number of times in the past, but it now back where it was found: in the right-hand recess. The basin in the end recess was smashed. Photograph © NMNI.

There are three sub-chambers, or recesses, which open off the body of the chamber, and each recess contains a large carved stone basin. Indeed it appears that the rcesses were constructed around the basin slabs, which are much too large to have been installed when the chamber was finished. The right-hand recess is much larger that the other two, and contains two basin stones, one nestled within the other.

A very large and beautifully carved slab covers the roof of this recess, with a complex arrangement of motifs and symbols which seem to be in a state of movement or transformation, as if the neolithic people were trying to depict something like the recent solar storms with their striking auoric displays. Right-hand recesses in Irish passage-graves tend to be larger and more complex. Partial neolithic human remains, believed to represent a minium of five people, were excavated in this recess. The Newgrange bones were included in a large genetics project which discovered family connections with burials in Carrowmore and Carrowkeel, both older sites in County Sligo, and Millin Bay on the Ards Peninsula to the north,

The chamber of Newgrange: right-hand recess engravings by Thomas Mason.
The chamber of Newgrange: right-hand recess engravings by Thomas Mason.

Many of the other chamber stones and roof-corbels bear neolithic engravings. The famous triple spiral, one third of the size of the triple spiral on the Entrance stone, is found in the inner recess. An enigmatic design known as the 'fern-leaf' is carved onto the edge of the large slab which forms the left recess. This pattern, very like a sheaf of wheat, is also found in ancient Mesopotamia where it represents the Herb of Immortality, a powerful plant which can bestow eternal life upon mortals as recounted in the epic of Gilgamesh.

After a journey across the Land of Night and the Waters of Death, Gilgamesh finds the ancient man Utanapishtim, the only human being to survive the Great Flood who was, afterwards, granted immortality. Utanapishtim tells Gilgamesh the story of how he was warned by the god Ea of the coming deluge, followed his command to build an ark and place assorted animals inside and so save himself and his family from death and humanity from extinction.

He then tells Gilgamesh eternal life will be granted if he can stay awake for the next six days. Gilgamesh fails in this and fails in his next attempt, to bring back a magic plant which will make one young again. The plant is eaten by a snake while Gilgamesh sleeps; thus explaining why snakes shed their skins (they gained immortality from the plant). Having failed to win eternal life, Gilgamesh is brought back to Uruk by the ferryman Urshanabi where, once home, he writes down his great adventure.

Source: The Eternal Life of Gilgamesh.

It is highly likely that stories such as this and the Descent of Inanna contain clues as to the meanings and uses of the Irish passage-graves. While it used to be easy to dismiss contemporary symbols common to both cultures, genetic research is showing that the Anatolian farmers were the common ancestors of both the Mesopotamian and Irish neolithic people.

On this day I will descend to the underworld. When I have arrived in the underworld, make a lament for me on the ruin mounds. Beat the drum for me in the sanctuary. Make the rounds of the houses of the gods for me.

Source: Inana's descent to the nether world.

The Descent of Inanna describes the journey of the Goddess to the Underworld, passing various thresholds and gate-keepers along the route. Stripped of her clothes and possessions along the way, Innana dies in the Underworld and her corpse is hung on an iron hook. A pair of spirits are sent to intercede for Inanna, and manage to retrieve her corpse:

The corpse was given to them.
The kurgarra sprinkled the food of life on the corpse.
The galatur sprinkled the water of life on the corpse.
Inanna rose......

Source: Descent Of Inanna Wolkstein - Kramer .

The upper basin is carved from a fine slab of granite from the Mourne Mountains, 100 kilometers to the north of the Boyne Valley. Like the quartz facade the granite would have been transported to Newgrange by some form of water transport. During the neolithic the River Boyne was tidal as far as Newgrange meaning boats or rafts transporting materials could let the sea push them upriver. The Newgrange people had a long history of sailing and transporting bulky objects: Their ancestors had migrated by sea from Anatolia many generations ago, and their more immediate forefathers had colonized Ireland from Brittany, landing in the Sligo area where the older sites of Carrowmore and Carrowkeel are found,

Kerbstone 52.
Kerbstone 52, the 'horned' summer solstice sunset stone at the rear of Newgrange. This stone has a very bovine presence. It is positioned directly opposite the Entrance stone. Illustration © Padraig Conway.

The Winter Solstice

Newgrange is justly world-famous for the alignment of the passage and chamber to the winter solstice sunrise on the shortest day of the year. Each year during midwinter, the rays of the rising sun are trapped within the monument, when the sunrise is captured within a specially designed structure dubbed the roof-box.

Newgrange at sunrise.
Winter solstice sunrise at Newgrange viewed from the passageway, showing the light entering through the roof-box. Image © Office of Public Works.

The roof-box, the structure located directly above the mouth of the passage, has a magnificently carved stone lintol, above an opening one meter in width, which which appears to have been kept closed during the neolithic using a pair of quartz blocks. The blocks showed signs of much use would have been removed annually to admit the sun during the winter solstices, and quite possibly the full moons at midsummer. Only one quartz block was found, and this itself later went missing. It is interesting to note that, though the Newqgrange roofbox is promoted as unique, an earlier example was discovered by myself in Cairn G at Carrowkeel in the 1990's. The Carrowkeel roofbox is aligned to the extreme setting lunar standstill which occurs every 18.6 years, while also monitering the midsummer sunsets and midwinter moonsets.

Roofbxo, Cairn G, Carrowkeel.
The dramatic entry of the sun into Cairn G near the summer solstice. The distant hill of Doomore can be seen through the roofbox. This picture was taken in 1997.

Many visitors are unimpressed with the 1970's restoration of the facade at Newgrange, more space-age than stone-age. Specific concerns have been raised over the complete reconstruction of the roox-box, which was completely dismantled and rebuilt by Michael O'Kelly and the Office of Public Works. Matthew and Geraldine Stout, in their excellent book on Newgrange point out that O'Kelly lifted the back of the roofbox by as much as 50 centimeters, a considerable amount. Did the roofbox ever function in the neolithic as O'Kelly's modern one does today? There is much debate to be found on the topic in online archaeology forums.

Michael O'Kelly supervises the rebuilding of the Newgrange roofbox.
Rebuilding the Newgrange roofbox after it had been dismantled and half of th passage capstones had been removed to straighten the orthostats. The back of the roofbox was raised by some 50 centimeters during the reconstruction.

When the sun shines in to Newgrange, the whole of Ireland tends to celebrate along with the lucky chosen few who have won tickets to witnesses the event within the monument. I was lucky enough to witness the event in 1997, and it was a truly wonderful experience. Newgrange has become very wrapped up in our national identity, instilling pride in our culturally advanced ancestors who were constructing elaborate, astronomically aligned structures centuries before the Great Pyramid or Stonehenge.

Satellite Monuments at Newgrange

About a hundred yards distant from this mount are placed two other pyramids, but of much smaller size, not above a fourth part as big, and, like it, both are encompassed with a circle of stones, set at some distance from one another, round their bottoms.

Edward Lhuyd, 1699.

Four smaller satellite mounds, quite likely earlier passage-graves flanked Newgrange, two to the east and two to the west. One is buried today, the chambers of two monuments, Sites K and L can be seen in the field to the west of Newgrange. The scanty remains of Site Z lie just east of the cairn at Newgrange.

Claire O'Kelly's plan of Site K.
Claire O'Kelly's plan of Site K.

The missing kerbstones of Site Z have been replaced with ugly modern concrete pillars. Some of the decorated stones from Site Z were removed to the National Museum in Dublin, where they can be seen in the Passage-grave display. Just to the east of Newgrange, across the hedge from Site Z is the terminating feature of a large late neolithic cursus.

Bob and Anne Hickey

The huge monument at Newgrange attracted many visitors, who often left their names etched into the stones or helped wear away the megalithic art as they squeezed past leaning orthostats. Around 1890 a caretaker, Mr. Bob Hickey, was appointed and a gate was fitted across the entrance. Bob's wife, Mrs. Anne Hickey, became caretaker at Newgrange, a position she held for over sixty years. The Hickey's met visitors, armed them with candles, and conducted them on a symbolic journey to the neolithic Underworld, as narrated in this memoir of a visit in 1914:

We found a woman waiting for us she had heard the rattle of our wheels far down the road, and had hastened from her house near by to earn sixpence by providing us with candles; and she led the way through the entrance into the passage beyond. As at Dowth, it is formed of huge slabs inclined against each other, but here they have given way under the great weight heaped upon them, and the passage grew lower and lower, until the woman in front of us was crawling on her hands and knees. The clergyman, who was behind her, examined the low passage by the light of his candle, and then said he didn't think he'd try it.

"Oh, come along, sir" urged the woman's voice. "Tis only a few yards, and then you can stand again. If you was a heavy man, now, I wouldn't be advisin' it; I've seen more than one who had to be pulled out by his feet; but for a slim man the likes of you sure it is nothing."

Famous visitors to Newgrange over the years included Maud Gonne, William Butler Yeats, AEON, W. Y. Evans-Wentz and Ella Young. Bob and Ann Hickey were aware of the solar alignment, and they told visitors about the sun illuminating the passage of Newgrange at midwinter. A dreamlike, mystical experience of the event was presented by George Russell ( AEON ) in his 1897 poem, A Dream of Angus Og.

Mrs. Hickey was tour guide at Newgrange for 60 years.
Mrs. Anne Hickey, tour guide at Newgrange for 60 years, tells a story about a mysterious woman with a blue apron, who used to appear at the site.

In 1909 the British astronomer, Sir Norman Lockyer noted that Newgrange was aligned to the midwinter solstice. The winter solstice alignment was published by W. Y. Evans-Wentz in his Fairy Faith in Celtic Countries, published in 1911.

The concrete wall at Newgrange.
Many visitors to Newgrange today are unaware that the mounds facade is a modern reworking, and hardly looked as it does now when it was built in 3,200 BC. The site was excavated over thirteen seasons by Michael O'Kelly, and restored using modern building materials. Knowth underwent a similar but much longer excavation and restoration.

Excavations and Reconstructions

In the early 1960's a decision was made to excavate and restore the monument, and Michael O'Kelly was given the job. The monument was excavated over thirteen seasons between 1962 and 1975, and after digging was complete the monument was renovated to facilitate the increasing numbers of visitors.

Aerial photograph of newgrange during excavations in the 1970's.
Aerial photograph of newgrange during excavations in the 1970's. Photograph by Leo Swan.

The excavations began in 1962 and continued for a four month season every year until the last season in 1975. Excavations began with a major survey of Newgrange and the smaller satellite monuments to the west. The exterior area around the front of the monument was divided into sections two meters square for excavation, and a search was made for the presumed missing sockets in the stone circle. At this stage the Bronze age pit-circle, the remains of a woodhenge, was discovered. O'Kelly dug sections into the cairn and examined the nature of the cairn slip to try and understand how the facade had collapsed.

Rebuilding the roofbox at Newgrange.
Rebuilding the roofbox at Newgrange. Image © Office of Public Works.

The passage and chamber floors were excavated down to the old ground level, and fragments of human remains, from a possible five individuals were discovered in the chamber. The roof of the passage and the top of the corbelled chamber were uncovered, and the roofing corbells were lifted so that the passage stones, many of which had leaned inwards over the millenia, could be straightened, allowing easier access to the chamber. Many of the passage and chamber corbels had grooves cut on their upper surfaces to channel off rainwater. The monument was carbon-dated to 3,200 BC, the dates coming from an organic mix of burnt clay and sand which had been used by the neolithic builders to caulk the roof, in another ingenious attempt to keep water out of the monument.

Newgrange from the air; an old Bord Failte postcard.
A pre-drone photograph of the restored Newgrange from the air with the modern, concrete-supported quartz facade. Image from an old Bord Fáilte postcard.

The roox-box structure, long known to antiquarians as the 'false lintol' was discovered by O'Kelly in 1963. During the excavations the roof-box was completely dismantled in order to straighten the passage stones immediately beneath the huge corbel supporting the structure. The straightening of the orthostats and reconstruction allowed the sun to enter the chamber, potentially for the first time sunce the cairn collapsed, and the sunrise was witnessed by Michael O'Kelly in 1967.

‘Another tradition, but a much more modern one or at least one more familiar in modern times, had been mentioned to us by many visitors particularly in the early stages of the excavations when we were working almost totally in the dark as far as factual information was concerned. This was to the effect that a belief existed in the neighbourhood that the rising sun, at some unspecified time, used to light up the three-spiral stone in the end recess. No one could be found who had witnessed this but it continued to be mentioned and we assumed that some confusion existed between Newgrange and the midsummer phenomenon at Stonehenge.

Newgrange: Archaeology, art and legend, Michael J. O’Kelly, 1982.

At the conclusion of the excavations, the huge passage-grave was somewhat contraversially conserved and restored. Outside the entrance to the great mound, a 'setting', discovered during O'Kelly's excavation, and also the remains of what may have been a hut site, were removed. The Entrance area was altered when two large bays were cut out of the cairn to allow visitor access. The roof-box, passage and chamber were covered in a reinforced concrete structure.

Michael O'Kelly and the O.P.W. reconstructed what they believed was a collapsed wall which had supported the quartz facade at Newgrange.
Michael O'Kelly and the Office of Public Works reconstructed what they believed was a collapsed wall which had supported the quartz facade at Newgrange.

The most contraversial aspect of O'Kelly's reconstruction was the erection of a concrete wall four meters high above the kerbstones. All of the quartz which was discovered scattered around the front of the monument was cemented to this wall, inter-studded with cobbles of granite which were found on the site. A section of the huge timber henge, were marked with concrete stumps, as were the missing orhostats and kerbstones from Site Z.

The back of Newgrange showing the collapsed 1880's mortared revetment caused by a back-up of water caused by the reinforced concrete additions to the front of the monument. The image is taken Newgrange revisited: new insights from excavations at the back of the mound in 1984–8 by Ann Lynch.
The back of Newgrange showing the collapsed 1880's mortared revetment caused by a back-up of water caused by the reinforced concrete additions to the front of the monument. The image is taken from Newgrange revisited: new insights from excavations at the back of the mound in 1984–8 by Ann Lynch.

O'Kelly's fantastic concrete-supported wall of quartz had become the source of a major problem at Newgrange by the 1980's, just ten years after it had been constructed. The renovators had left seep holes in the concrete wall to allow rainwater to flow out from the cairn, but within a few years the holes became blocked and the water had no where to go. As a result, the backed-up water burst the back of the monument, and remedial conservation work had to be undertaken by Ann Lynch. The wall remains contraversial, and many researchers believe it could never have been so high or steep during the neolithic.

New Discoveries

While flying drones in the the Boyne Valley in the summer of 2018, during an extended period of dry weather, local researchers discovered the first of a whole selection of new monuments on the flood-plain below Newgrange. Many of these new monuments seem to be the outlines of a complex of late-neolithic henges. Spurred on by this highly successful and well-publicised discovery, government services undertook their own new detailed survey and published a comprehensive report on their findings. Yet more new monuments were located in 2019. The detailed 146 page report can be accessed here.

The series of newly discovered monuments in the Boyne Valley.
The series of newly discovered monuments in the Boyne Valley.

More exciting new discoveries were made in 2018 at Newgrange Farm, where a massive linear cursus has been discovered and excavated by Matthew and Geraldine Stout. This structure is about 300 meters due south of Newgrange, and is oriented east to west. The monument is very unusual and seems to be a some form of henge mixed with a cursus. The excavators were able to date the monument to the neolithic. The Stouts have published a website about their excavations which can be accessed here.

Dr. Clíodhna Ní Lionáin examins the newly discovered panel of neolithic art discovered under Dowth Hall.
Dr. Clíodhna Ní Lionáin examines the newly discovered panel of neolithic art discovered under Dowth Hall.
Dowth Hall

A further new monument was discovered buried under Dowth Hall, a mansion house built around 1760 on top of an enormous passage-grave some forty meters in diameter with two chambers and wonderful examples of megalithic art has been discovered and excavated by Dr. Clíodhna Ní Lionáin. This monument may be the fourth great monument in the Boyne Valley mentioned in descriptions in the early 1800's. The Dowth Hall monument, which has a number of satellites, may be or represent the Hill of Sin which features in the mythology of Dowth.

Ancient DNA at Newgrange

Another major discovery at Newgrange was made in the area of genetics, when Lara Cassidy and Dan Bradley took DNA samples from human remains recovered in the chamber of Newgrange during Michael O'Kelly's excavations. The DNA samples indicated that the young man buried in the right-hand recess, beside the double basin and under the fabulous panel of engraved art, was the product of an incestious relationship. Newspapers had a field day with headlines about priest-kings and incest.

The team also unearthed a web of distant familial relations between this man and others from sites of the passage tomb tradition across the country, namely the “mega-cemeteries” of Carrowmore and Carrowkeel in Co Sligo, and the Millin Bay monument in Co Down. Source.
Newgrange from the banks of the Boyne.
Newgrange from the River Boyne onr kilometer away to the south. The large unopened mound in the foreground is Site B.