Within the Loughcrew complex, Cairn T (Hag’s Cairn), which is situated on Carnbane East, is the most outstanding of all (see: Sliabh na Callighe (Mountains of the Witch). As if it had been designed as an astronomical construct, the mound “stands in the focal position and takes the most prominent place on the highest summit of a megalithic area” (Brennan 1994:46). Originally there were fifty to a hundred mounds (Ibid.). In the seven remaining mounds, sufficient stones are in their original alignment for a beam of light to be projected into the chamber and against the backstone, presenting a clearly defined frame of light (Ibid.). The number of remaining mounds allows to reconstruct the main elements in a planned astronomical and calendrical scheme.
Major mounds and their satellites
In 1980, two researchers, Martin Brennan and Jack Roberts studied the two most important cairns at Loughcrew, T and L, which are supplemented by smaller satellite mounds linked to their larger counterparts by orientation and alignment (Brennan 1994:46-50). “Cairns L and T – [initially] appeared to be oriented in the same direction according to archaeological surveys done before 1980s, however, [the explorers have eventually concluded that] in terms of real function, the equinox rising sun is focused on Cairn T, but does not approach anywhere near the passage of Cairn L” (Brennan 1994:48).
While conducting their studies, the both researchers had encountered similar problems as we did during our study trip, while they were trying to reach the Cairn T in March to observe the spring equinox (see: Sliabh na Callighe (Mountains of the Witch). Martin Brennan (1994:46) writes that “the mountains were covered in snow and the […] winds from the east blew icy gusts down the passage of the mound.” Actually, 5000 years ago the climate was more favourable to celebrate the spring equinox.
What does the equinox mean?
“Equinox literally means equal night. In terms of hours, equinox is the date, when the hours of day and night are equal. The two extremes of this are winter solstice, when the night is longest, and summer solstice, when the night is shortest” (Brennan 1994:90). So equinox (spring and autumnal) is midway between these two points (Ibid.:90). “At equinox the sun is raising due east to the horizon” (Ibid.:90).
As the major mound, Cairn T “dominates a group of smaller satellite mounds clustered around it on the summit of the Mountain of the Sorceress, [called like that for the mentioned reasons (see: Sliabh na Callighe (Mountains of the Witch)]” (Brennan 1994:48). It is orientated about nine degrees south of east and above the horizon (Ibid.:90). Therefore “the beam [of light] does not enter the mound until the sun rises to the proper altitude. At the spring equinox the angle of the sun’s path is very high in relation to the horizon, whereas at the autumnal equinox the angle of the ecliptic is lower. […] What [one can witness] at Cairn T [at the equinox is] the intended projection of light and its interaction with [the carved symbols]” (Ibid.:90).
During their research at the time of the spring equinox, Brennan and Roberts noticed a rectangular patch of light on the upper left of the backstone inside the Cairn T (Brennan 1994:47,93). It was starting to take a regular form, “brilliantly illuminating the entire chamber in a glowing splendour of shimmering golden orange light” (Ibid.). As the researchers notice, it gives a different effect from the one observed at Newgrange at the winter solstice. Whereas in the latter, the beam of light sweeps across the chamber, inside the Cairn T at Loughcrew, “the light [assumes] a clearly defined geometric shape that [is] projected on to the upright backstone and [moves] diagonally across it, tracing the path of the sun against a mural of prehistoric art” (Ibid.).
Encrypted message of Loughcrew?
“The arrangement of the engravings in relation to the sunbeam reveals that there is quite precise time reckoning and careful determination of the equinoxes” (Brennan 1994:92). The beam of light is concentrated on one stone at the back of the passage chamber (C8) and in its journey it progresses from left to right (Ibid.:94). Finally it gradually moves down the stone, “reflecting the movement of the rising sun” (Ibid.:94) and “illuminating key symbols as it progresses” (Ibid.:92). “It is the beam of light itself which finally and conclusively identifies the inscriptions as solar symbols” (Ibid.:94). The focal point of the entire process is a petroglyph representing “a large circular radial sun on the right of the stone” (Ibid.:93; see 94).
The researchers were highly impressed by the observed phenomenon, where the sliding beam of light played the role of a guide or key to the encrypted message left by the builders of Loughcrew. In this context, the petroglyphs on the backstone (C8) in Cairn T may “be interpreted as the language of unknown archaic astronomers” (Brennan 1994:92).
“For the first time we were seeing the signs and symbols in the context in which the artist had meant them to be seen. Suddenly markings that had appeared to be random and haphazard became part of an intricately structured system that derived its meaning from the solar event we were witnessing” (Brennan 1994:47)
Furthermore, the entrance stones and the narrow passage shape the beam of light into a regular geometric form of a rectangle (Brennan 1994:94). At the end it disintegrates in the process of moving on the right and away from stone C8 (Ibid.:94). The rectangular shape reconstructs itself reaching stone C10 (Ibid.:94). At autumnal equinox the process is repeated (research carried out at the site on 22nd September, 1980 by Martin Brennan and Jack Roberts) (Ibid.:98). “The beam of light clearly centres on the sun’s disc, repeating the imagery of the spring equinox. [Although the] focal image in both events remains the same, […] different sets of engravings are utilized to measure the beam of light” (Ibid.:98). With the same width of the beam as at spring equinox, at the autumnal its length changes and is about double as it is in the spring (Ibid.:98). In both cases, however, “the illumination of the sun wheel unambiguously links the prehistoric art and the astronomy” (Ibid.:100).
Precise solar construct
According to the results of research done at the site on 20th March in 1980 (on the day of the spring equinox), Cairn T turned out to be a precise astronomical instrument or a solar construct (Brennan 1994:48). Combined with the prehistoric petroglyphs, the visible differences in the movement of the sunlight on the backstone made it far easier and more precise in identifying the actual day of equinox at Loughcrew than the day of winter solstice at Newgrange (Ibid.).
Epitaph for Jeremiah …?
There is a growing belief that Cairn T is actually the burial place of the Bible Prophet, Jeremiah! Some authors claim that Jeremiah’s message is encoded in the petroglyphs inside the entrance to the Cairn and that they even reveal the exact date of his death on 21st of September in 581 BC (JAH 1998-2006; O’Bryan 2017). According to the same authors, the Cairn T itself would have been designed to demonstrate the autumnal equinox just in memory to the Prophet (JAH 1998-2006). “These are the same [authors] who also believe that the Ark of the Covenant is buried on the Hill of Tara” (Murphy 2017-2020).
Jeremiah was the Jewish prophet known from the Old Testament from his prophecy of the destruction of Jerusalem (O’Bryan 2017). According to one of the versions reporting a possible story of the lost Ark of the Covenant, Jeremiah may have been a person who escaped Jerusalem with the Ark in 587 BC (Ibid.). It may have happened just before “the Babylonians under Nebuchadnezzar took the city and destroyed the First Temple” (Ibid.). After the Book of Jeremiah, the Prophet escaped the conquered city together with other Israelites, among whom there was a Jewish princess and the scribe Baruch (JAH 1998-2006; O’Bryan 2017). As the legend says, the group sailed to Ireland, after stopping in Egypt (possibly Tanis) (JAH 1998-2006; O’Bryan 2017) Other accounts state, however, that the Israelites actually headed off to the south, in the direction of Abyssinia (today Ethiopia).
Bethel aka Stone of Destiny
It is also believed that Jeremiah brought to Ireland the Stone of Destiny aka Jacob’s Pillar, which was once used by the biblical patriarch Jacob (Genesis 28:11-22) as a pillow while he was dreaming of angels ascending and descending on a ladder suspended between the Earth and Heavens (JAH 1998-2006; Gilbert 2015). Jacob thought he had found himself at the door to God’s realm and so he put the stone in a vertical position and called the place the Bethel, which means the House of God (Gilbert 2015). The Stone of Destiny, in turn, was called in Irish Lia Fáil, which means the Speaking Stone or the Stone that Roared to give an explanation for its oracular function (JAH 1998-2006; Keyser 1999-2009). It is believed that it became later the coronation stone for the High Kings of Ireland (Keyser 1999-2009; Gilbert 2017). Herbert W. Armstrong writes that “many kings in the history of Ireland, Scotland, and England have been coronated over this stone – including the present queen. The stone rests today in Westminster Abbey in London, and the coronation chair is built over and around it” (Keyser 1999-2009). Additionally, the stone has got the plate behind it labelling it as ‘Bethel’ (Gilbert 2017).
Jeremiah, Ollamh Fodhla and Tuatha de Danann
Some authors look for evidence for the story in Irish Annals. None of those refers to Jeremiah (Keyser 1999-2009). However, the Annals of Clonmacnoise mentions a mysterious personage of Ollamh Fodhla who appeared on the Island accompanied by an Oriental princess (Gilbert 2015). As the story goes they brought to its shore ancient relics: a harp, chest and a stone (Ibid.). A leading authority on Irish history, Roderic O’Flaherty, however, states that Ollamh Fodhla could not be the same person as Jeremiah due to completely different origins and lifetime of both characters (Keyser 1999-2009). Some scholars also suggest that the Stone of Destiny was brought to Ireland already prior to 700 BC by mysterious people, the Irish myths refer to as Tuatha de Danann – a supernatural race who came to Ireland in ships (Gilbert 2015). It is suggested they were actually representatives of the Tribe of Dan – one of the tribes of Israel, according to the Torah, who had lived along the coast in the north of Israel (today Palestine) (Ibid.). Simultaneously, it was the place where Jacob had got his vision. Israelites from the Tribe of Dan were in danger of becoming captives of other invaders – the Assyrians (Ibid.). As they were excellent sailors, they may have escaped by the sea and reached the shores of Ireland together with their treasure – the Stone of Destiny (Ibid.). In this version, however, Jeremiah could not have played the role he has been ascribed to by the legend.
Although such stories are fascinating, they are decidedly criticized or even ignored by academics. First of all, the Cairn T of Loughcrew was not built as a burial place for Jeremiah or aligned according to the day of his death as it is itself dated back to the second part of the fourth millennium BC, whereas Jeremiah lived in the sixth century BC. Most authors point to the fact that Irish records do not mention Jeremiah’s landing in Ireland or the fact he brought there such treasures as the Bethel or the Arch of Convents (Keyser 1999-2009).
The assumption that the Prophet was buried in the Cairn T of Loughcrew is not borne out either by Irish Annals, petroglyphs of the cairn (unless somebody has deciphered their meaning) or by archaeological evidence. If the Bethel is the same as the Stone of Destiny, which is still under question, it seems more possible it was brought by the Israelites from the Tribe of Dan. Still these are also speculations …
Inside the Cairn T
We did not have a chance to visit Loughcrew in March. Yet I had already climbed up the Hag’s Hill together with my sister when she came to Ireland several months before our study trip. It was in October and we travelled with a group of tourists to the Boyne Valley. The weather was a little bit better than in March. There was a shower from time to time but without strong winds or low temperatures. Still it was wet and some people slipped down the side of the Hill and got covered in mud before they reached its summit. Although the visibility was quite poor because of the mist, we could eventually enter the Cairn T in small groups and admire the mysterious symbols on huge stones inside the passage. Together with my sister we were amazed by their circulating lines, zig-zags and circles engraved in stone. Fascinated with their various shapes I was tracing enigmatic lines with my fingers as if I in hope of understanding the prehistoric writing by touch.
Do they contain any encoded messages at all …?
Faculties of English Philology, History of Art and Archaeology.
University of Silesia in Katowice, Poland;
Cardinal Stefan Wyszyński University in Warsaw, Poland;
University College Dublin, Ireland.
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