The Eye of the Sahara
The Eye of the Sahara, also known as the Richat Structure and the Eye of Africa, is a geological feature in the Sahara Desert’s Adrar Plateau, located in west–central Islamic Republic of Mauritania.
The structure is an eroded elliptical dome of sedimentary rock, that ranges in age from the Proterozoic (2500 to 538.8 million years ago) within the centre, to Ordovician (488.3 to 443.7 million years ago) sandstone around its periphery.
The dome has a diameter of 40 kilometres (25 mi), with an interior comprised of intrusive and extrusive igneous rocks, including rhyolitic volcanic rocks, gabbros, carbonatites and kimberlites.
The rhyolitic rocks have been interpreted as lava flows that are part of two distinct eruptive centres formed from the remains of two maars, a low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion caused when groundwater comes into contact with hot lava or magma).
Eye of the Sahara – Image Credit : NASA – Public Domain
The gabbroic rocks form two concentric ring dikes, the inner ring dyke is 20 metres in width and lies 3 kilometres from the centre of the structure, while the outer ring dyke is 50 metres in width and is located 7 to 8 kilometres from the centre.
The processes that formed the structure has been theorised to be the result of either a meteoric impact, or a deep magmatic intrusion, the latter of which is supported with high-resolution airborne magnetic data and gravity data to reinforce the intrusion hypothesis.
The Eye of the Sahara was first identified during the 1950’s from aerial photographs, leading to ongoing studies by geologists until as recently as 2008. This latest study, explained that the ridges and valleys we see today are formed by the differential erosion of alternating hard and soft rock layers, uplifted as a dome by an underlying alkaline igneous complex of the Cretaceous age.
Archaeological research at the structure has revealed evidence of human activity, with numerous deposits of pre-Acheulian and Acheulian artefacts, characterised by the distinctive oval and pear-shaped “hand axes” normally associated with Homo erectus and derived species such as Homo heidelbergensis.
Acheulean tools were produced during the Lower Palaeolithic era across Africa and much of West Asia, South Asia, East Asia and Europe, first developed about 1.76 million years ago and derived from the more primitive Oldowan technology associated with Homo habilis.
Research by archaeologists have found Acheulean sites located along wadis that occupy the outermost annular depression of the structure, where outcrops of quartzite were sourced to provide the raw materials for tool manufacturing. Tool types found in Acheulean assemblages include pointed, cordate, ovate, ficron, and bout-coupé hand-axes (referring to the shapes of the final tool), cleavers, retouched flakes, scrapers, and segmental chopping tools.
The geographic distribution of Acheulean tools – and thus the peoples who made them – is often interpreted as being the result of palaeo-climatic and ecological factors, such as glaciation and the desertification of the Sahara Desert.
The climate of the region has undergone enormous variations between wet and dry periods over the last few hundred thousand years, believed to be caused by long-term changes in the North African climate cycle that alters the path of the North African Monsoon.
During the African humid period (AHP), much of the Sahara desert was covered by grasses, trees and lakes, where the people of the Lower Palaeolithic lived an existence as hunter-gatherers.
Evidence of Neolithic activity has also been found, with sparse, widely scattered spear points and other artefacts located northwest of the outer ring, although generally absent in its innermost depressions of the structure.
Due to the lack of middens or identifiable evidence of sustained occupation, this has led to the interpretation that the structure was only used for short-term hunting and stone tool manufacturing.
A pseudo theory by Fractal Source Research (FSR), proposes that the structure is the remnants of an advanced Antediluvian civilisation, namely the lost city of Atlantis, based on a comparison of measurements from the structure with the descriptions given by Plato.
Eye of the Sahara, taken by the Sentinel-2 Satellite – CC BY-SA 3.0 IGO
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
2,000 ram heads uncovered at Temple of Rameses II in Abydos
An archaeological mission led by the University of York has uncovered 2,000 ram heads at the Temple of Rameses II in Abydos, Egypt.
Abydos is one of the oldest cities of Ancient Egypt following Upper Egypt becoming unified under Abydos rulers during the Naqada III period (3200–3000 BC).
The city was the site of many ancient temples, including Umm el-Qa’ab, a royal necropolis where early pharaohs were entombed, and the temple of Seti I, which contains an inscription known as the Abydos King List (a chronology of dynastic pharaohs of Ancient Egypt from Menes until Seti I’s father, Ramesses I).
During the 19th dynasty, Ramesses II, also known as Ramesses the Great, constructed a temple complex in dedication primarily to Osiris and Seti I. Ramesses II is often regarded as the most celebrated pharaoh of the New Kingdom, which itself was the most powerful period of Ancient Egypt.
The temple is decorated with several achievements from his rule, including scenes of the Battle of Kadesh where the forces of the New Kingdom of Egypt under Ramesses II, and the Hittite Empire under Muwatalli II, fought near the modern Lebanon–Syria border around 1274 BC.
Excavations at the temple complex by archaeologists from the University of York have uncovered 2,000 ram heads dating from the Ptolemaic period. The team also found the remains of ewes, wild goats, dogs, cows, gazelles and mongooses within a room in the temple complex, which are thought to be votive offerings in reverence to Ramses II 1,000 years after his death.
Image Credit : Ministry of Tourism and Antiquities
A large palatial structure was also discovered from the Old Kingdom’s 6th Dynasty, containing several statues, papyri, ancient tree remains, leather garments and shoes, in addition to parts of the northern wall that surrounded the Temple of Rameses II.
According to the Ministry of Tourism and Antiquities, the palace will greatly contribute to a new interpretation of how the site looked during the Old Kingdom and the activities that took place there.
Ministry of Tourism and Antiquities
Header Image Credit : Ministry of Tourism and Antiquities
The “Stonehenge calendar” shown to be a modern construct
Stonehenge is an astonishingly complex monument, which attracts attention mostly for its spectacular megalithic circle and “horseshoe”, built around 2600 BC.
Over the years, several theories have been put forward about Stonehenge’s meaning and function. Today, however, archaeologists have a rather clear picture of this monument as a “place for the ancestors”, located within a complex ancient landscape which included several other elements.
Archaeoastronomy has a key role in this interpretation since Stonehenge exhibits an astronomical alignment to the sun which, due to the flatness of the horizon, refers both to the summer solstice sunrise and to the winter solstice sunset. This accounts for a symbolic interest of the builders in the solar cycle, most probably related to the connections between the afterlife and winter solstice in Neolithic societies
This is, of course, very far from saying that the monument was used as a giant calendrical device, as instead has been proposed in a new theory published in the renewed Archaeology Journal Antiquity. According to this theory, the monument represents a calendar based on 365 days per year divided into 12 months of 30 days plus five epagomenal days, with the addition of a leap year every four. This calendar is identical to the Alexandrian one, introduced more than two millennia later, at the end of the first century BC as a combination of the Julian calendar and the Egyptian civil calendar.
To justify this “calendar in stone”, the number of the days is obtained by multiplying the 30 sarsen lintels (probably) present in the original project by 12 and adding to 360 the number of the standing trilithons of the Horseshoe, which is five.
The addition of a leap year every four is related to the number of the “station stones”, which is, indeed, four. This machinery was allegedly kept in operation using the solstice alignment of the axis and was supposedly taken from Egypt, much refining, however, the Egyptian calendar, which was of 365 days (the leap year correction was not present until Roman times).
This is the admittedly fascinating theory that has been subjected to a severe stress test by two renewed experts of Archaeoastronomy, Juan Antonio Belmonte (Instituto de Astrofísica de Canarias and Universidad de La Laguna, Tenerife, Spain) and Giulio Magli (Politecnico of Milan). In their paper, which is going to be published on Antiquity as well, the authors show that the theory is based on a series of forced interpretations of the astronomical connections of the monument, as well as on debatable numerology and unsupported analogies.
First of all, astronomy. Although the solstice alignment is quite accurate, Magli and Belmonte show that the slow movement of the sun at the horizon in the days close to solstices makes it impossible to control the correct working of the alleged calendar, as the device (remember: composed by huge stones) should be able to distinguish positions as accurate as a few arc minutes, that is, less than 1/10 of one degree. So, while the existence of the axis does show interest in the solar cycle in a broad sense, it provides no proof whatsoever for inferring the number of days of the year conceived by the builders.
Second, is numerology. Attributing meanings to “numbers” in a monument is always a risky procedure. In this case, a “key number” of the alleged calendar, 12, is not recognizable anywhere, as well as any means of taking into account the additional epagomenal day every four years, while other “numbers” are simply ignored (for instance, the Stonehenge portal was made of two stones). Thus, the theory suffers also from the so-called “selection effect”, a procedure in which only the elements favourable to a desired interpretation are extracted from the material records.
Finally, cultural paragons. The first elaboration of the 365 plus 1-day calendar is documented in Egypt only two millennia later than Stonehenge (and entered into use further centuries later). Thus, even if the builders took the calendar from Egypt, they refined it on their own. In addition, they invented on their own also a building to control time, since nothing of this kind ever existed in ancient Egypt – probably the Egyptians reflected the drift of their 365-day
calendar through the seasons in their architecture but this is far different. Besides, a transfer and elaboration of notions with Egypt occurred around 2600 BC and has no archaeological basis.
All in all, the alleged “Neolithic” solar-precise Stonehenge calendar is shown to be a purely modern construct whose archaeoastronomical and calendrical bases are flawed.
As occurred many times in the past – for instance, for the claims (shown untenable by modern research) that Stonehenge was used to predict eclipses – the monument returns to its role of the silent witness of the sacred landscape of its builders, a role which – as Magli and Belmonte stress – does not take anything away from his extraordinary fascination and importance.
Ghosts8 months ago
Zozo: The Ouija Board Demon
Space6 months ago
Scientists claim to have found the answer what existed before the Universe
General7 months ago
Mysterious creature like Demogorgon from the “Stranger Things” filmed in India
General7 months ago
Where did ships from the Middle Ages come from in the US deserts?
General3 months ago