An alignment in archaeology is a co-linear arrangement of features or structures with external landmarks, [1] in archaeoastronomy the term may refer to an alignment with an astronomically significant point or axis. [1]
"Alignment" may also refer to circumstantial or secondary type of evidence used to infer archaeological association of archeological features, such as postholes, by virtue of their physical relationships rather than stratigraphic ones.[ citation needed ]
The alignment of features on a site within or across several archaeological phases many times is an indication of a larger topology to the formation of features relating to activity in the archaeological record. Structures buildings and liner features such as ditches can all have common alignments that relate to a feature that is not exposed during excavation or is off-site. An example would be that a road has biased the alignment of features some way back from the actual road side. Another example will be contours or water courses which may be buried or obscure.[ citation needed ]
Vertical alignments may demonstrate evolution of long term land use throughout time. Examples: roads and structures built upon earlier roads or other structures.[ citation needed ]
Grave alignment is used to infer religious beliefs (e.g. Christianity). [2] The change in astronomical alignments over time may be used to infer dates of construction of structures with supposed astronomical significance, or vice versa. [3]
Chance alignments may mislead; the number of potential astronomical alignment targets over time is large; statistical significance can be used when examining groups of alignments. [4]
The landscape features known as Ley lines were discovered by Alfred Watkins in the 1920s, based on apparent co-linearity of features, who inferred an ancient system of surveying landmarks. The idea was rejected by archaeologists, [5] and the line associations have been shown to be not generally statistically significant. [6]
Archaeoastronomy is the interdisciplinary or multidisciplinary study of how people in the past "have understood the phenomena in the sky, how they used these phenomena and what role the sky played in their cultures". Clive Ruggles argues it is misleading to consider archaeoastronomy to be the study of ancient astronomy, as modern astronomy is a scientific discipline, while archaeoastronomy considers symbolically rich cultural interpretations of phenomena in the sky by other cultures. It is often twinned with ethnoastronomy, the anthropological study of skywatching in contemporary societies. Archaeoastronomy is also closely associated with historical astronomy, the use of historical records of heavenly events to answer astronomical problems and the history of astronomy, which uses written records to evaluate past astronomical practice.
Ley lines are intentionally straight alignments drawn between various historic structures and prominent landmarks. The idea was developed in early 20th-century Europe, with ley line believers arguing that these alignments were recognised by ancient societies that deliberately erected structures along them. Since the 1960s, members of the Earth Mysteries movement and other esoteric traditions have commonly believed that such ley lines demarcate "earth energies" and serve as guides for alien spacecraft. Archaeologists and scientists regard ley lines as an example of pseudo-archaeology and pseudo-science.
The Nazca Lines are a group of very large geoglyphs made in the soil of the Nazca Desert in southern Peru. They were created between 500 BC and AD 500 by people making depressions or shallow incisions in the desert floor, removing pebbles and leaving differently colored dirt exposed. In the years leading up to 2020, between 80 and 100 new figures had been found with the use of drones, and archaeologists believe that there are more to be found.
Alignments of random points in a plane can be demonstrated by statistics to be counter-intuitively easy to find when a large number of random points are marked on a bounded flat surface. This has been put forward as a demonstration that ley lines and other similar mysterious alignments believed by some to be phenomena of deep significance might exist solely due to chance alone, as opposed to the supernatural or anthropological explanations put forward by their proponents. The topic has also been studied in the fields of computer vision and astronomy.
A stone circle is a circular alignment of standing stones. They are commonly found across Northern Europe and Great Britain, and typically date from the Late Neolithic and Early Bronze Age eras, with most concentrations appearing from 3000 BC. The best known examples include those at the henge monument at Avebury, the Rollright Stones, and elements within the ring of standing stones at Stonehenge. Ancient stone circles appear throughout Europe, with many existing in the Pyrenees, on the Causse de Blandas in southern France in the Cevennes, in the Alps, and Bulgaria.
Alexander "Sandy" Thom was a Scottish engineer most famous for his theory of the Megalithic yard, categorisation of stone circles and his studies of Stonehenge and other archaeological sites.
To some indigenous peoples of North America, the medicine wheel is a metaphor for a variety of spiritual concepts. A medicine wheel may also be a stone monument that illustrates this metaphor.
Earth mysteries are a wide range of spiritual, quasi-religious and pseudoscientific ideas focusing on cultural and religious beliefs about the Earth, generally with regard to particular geographical locations of historical significance. Believers in Earth mysteries generally consider certain locations to be sacred, or that certain spiritual energies may be active at those locations. The term "alternative archaeology" has also been used to describe the study of Earth mystery beliefs.
A geoglyph is a large design or motif produced on the ground by durable elements of the landscape, such as stones, stone fragments, gravel, or earth. A positive geoglyph is formed by the arrangement and alignment of materials on the ground in a manner akin to petroforms, while a negative geoglyph is formed by removing part of the natural ground surface to create differently coloured or textured ground in a manner akin to petroglyphs.
As with most academic disciplines, there are a number of archaeological sub-disciplines typically characterised by a focus on a specific method or type of material, geographical or chronological focus, or other thematic concern.
Petroforms, also known as boulder outlines or boulder mosaics, are human-made shapes and patterns made by lining up large rocks on the open ground, often on quite level areas. Petroforms in North America were originally made by various Native American and First Nation tribes, who used various terms to describe them. Petroforms can also include a rock cairn or inukshuk, an upright monolith slab, a medicine wheel, a fire pit, a desert kite, sculpted boulders, or simply rocks lined up or stacked for various reasons. Old World petroforms include the Carnac stones and many other megalithic monuments.
Nabta Playa was once a large internally drained basin in the Nubian Desert, located approximately 800 kilometers south of modern-day Cairo or about 100 kilometers west of Abu Simbel in southern Egypt, 22.51° north, 30.73° east. Today the region is characterized by numerous archaeological sites. The Nabta Playa archaeological site, one of the earliest of the Egyptian Neolithic Period, is dated to circa 7500 BC.
The prehistoric monument of Stonehenge has long been studied for its possible connections with ancient astronomy. The site is aligned in the direction of the sunrise of the summer solstice and the sunset of the winter solstice. Archaeoastronomers have made a range of further claims about the site's connection to astronomy, its meaning, and its use.
SunWatch Indian Village / Archaeological Park, previously known as the Incinerator Site, and designated by the Smithsonian trinomial 33-MY-57, is a reconstructed Fort Ancient Native American village next to the Great Miami River on West River Road in Dayton, Ohio. The dwellings and site plan of the 3-acre (1.2 ha) site are based on lengthy archeological excavations sponsored by the Dayton Society of Natural History, which owns and operates the site as an open-air museum. Because of its archaeological value, the site was listed in 1974 on the National Register of Historic Places. Since that time, as the many years of archaeological research at the site have led to important findings about the Fort Ancient culture, SunWatch Indian Village was designated in 1990 as a National Historic Landmark.
The Medicine Wheel/Medicine Mountain National Historic Landmark is a medicine wheel located in the Bighorn National Forest, in the U.S. state of Wyoming. The Medicine Wheel at Medicine Mountain is a large stone structure made of local white limestone laid upon a bedrock of limestone. It is both a place of sacred ceremony and scientific inquiry. In Native Science these uses are not distinguished as separate as they are in Western science.
Carahunge, also known as Zorats Karer, Dik-Dik Karer, Tsits Karer and Karenish, is a prehistoric archaeological site near the town of Sisian in the Syunik Province of Armenia. It is also often referred to in international tourist lore as the "Armenian Stonehenge".
Paul Devereux is a British author, researcher, lecturer, broadcaster, artist and photographer based in the UK. Devereux is a co-founder and the managing editor of the academic publication Time & Mind – the Journal of Archaeology, Consciousness and Culture, a research associate with the Royal College of Art (2007-2013), and a Research Fellow with the International Consciousness Research Laboratories (ICRL) group at Princeton University.
An astronomical complex or commemorative astronomical complex is a series of man-made structures with an astronomical purpose. It has been used when referring to a group of Megalithic structures that it is claimed show high precision astronomical alignments. For the study of Archaeoastronomy, such complexes of similar structures are required for adequate measurement and calculation to ensure that similar celestial sightlines were intended by the designers. These arrangements have also been known as observational, ceremonial or ritual complexes with importance for the study of prehistoric cultures.
An axial stone circle is a megalithic ring of stones of a particular design found in County Cork and County Kerry in southwest Ireland. Archaeologists have found it convenient to consider the axial five-stone circle and axial multiple-stone circle separately. The circle has an approximate axis of symmetry aligned in a generally northeast–southwest direction. The stone at the southwest side of the circle, rather than being an upright orthostat like all the rest, is a slab lying horizontally with its long thin edge along the circumference of the ring. Because it marks the axis of the circle it is called the axial stone.