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.
Stonehenge is a prehistoric monument on Salisbury Plain in Wiltshire, England, two miles (3 km) west of Amesbury. It consists of an outer ring of vertical sarsen standing stones, each around 13 feet (4.0 m) high, seven feet (2.1 m) wide, and weighing around 25 tons, topped by connecting horizontal lintel stones. Inside is a ring of smaller bluestones. Inside these are free-standing trilithons, two bulkier vertical Sarsens joined by one lintel. The whole monument, now ruinous, is orientated towards the sunrise on the summer solstice. The stones are set within earthworks in the middle of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred tumuli.
The Ring of Brodgar is a Neolithic henge and stone circle about 6 miles north-east of Stromness on Mainland, the largest island in Orkney, Scotland. It is part of the UNESCO World Heritage Site known as the Heart of Neolithic Orkney.
Newgrange is a prehistoric monument in County Meath in Ireland, located on a rise overlooking the River Boyne, 8 kilometres (5.0 mi) west of Drogheda. It is an exceptionally grand passage tomb built during the Neolithic Period, around 3200 BC, making it older than Stonehenge and the Egyptian pyramids. It is aligned on the winter solstice sunrise. Newgrange is the main monument in the Brú na Bóinne complex, a World Heritage Site that also includes the passage tombs of Knowth and Dowth, as well as other henges, burial mounds and standing stones.
Woodhenge is a Neolithic Class II henge and timber circle monument within the Stonehenge World Heritage Site in Wiltshire, England. It is 2 miles (3.2 km) north-east of Stonehenge, in Durrington parish, just north of the town of Amesbury.
There are three related types of Neolithic earthwork that are all sometimes loosely called henges. The essential characteristic of all three is that they feature a ring-shaped bank and ditch, with the ditch inside the bank. Because the internal ditches would have served defensive purposes poorly, henges are not considered to have been defensive constructions. The three henge types are as follows, with the figure in brackets being the approximate diameter of the central flat area:
- Henge (> 20 m). The word henge refers to a particular type of earthwork of the Neolithic period, typically consisting of a roughly circular or oval-shaped bank with an internal ditch surrounding a central flat area of more than 20 m (66 ft) in diameter. There is typically little if any evidence of occupation in a henge, although they may contain ritual structures such as stone circles, timber circles and coves. Henge monument is sometimes used as a synonym for henge. Henges sometimes, but by no means always, featured stone or timber circles, and circle henge is sometimes used to describe these structures. The three largest stone circles in Britain are each within a henge. Examples of henges without significant internal monuments are the three henges of Thornborough Henges. Although having given its name to the word henge, Stonehenge is atypical in that the ditch is outside the main earthwork bank.
- Hengiform monument (5 – 20 m). Like an ordinary henge, except the central flat area is between 5 and 20 m (16–66 ft) in diameter, they comprise a modest earthwork with a fairly wide outer bank. The terms Mini henge or Dorchester henge are sometimes used as synonyms for hengiform monument. An example is the Neolithic site at Wormy Hillock Henge.
- Henge enclosure (> 300 m). A Neolithic ring earthwork with the ditch inside the bank, with the central flat area having abundant evidence of occupation and usually being more than 300 m (980 ft) in diameter. Some true henges are as large as this, but lack evidence of domestic occupation. Super henge is sometimes used as a synonym for a henge enclosure. However, sometimes Super henge is used to indicate size alone rather than use, e.g. "Marden henge ... is the least understood of the four British 'superhenges' ".
Durrington Walls is the site of a large Neolithic settlement and later henge enclosure located in the Stonehenge World Heritage Site in England. It lies 2 miles (3.2 km) north-east of Stonehenge in the parish of Durrington, just north of Amesbury in Wiltshire. The henge is the second-largest Late Neolithic palisaded enclosure known in the United Kingdom, after Hindwell in Wales.
Harry Aubrey Woodruff Burl HonFSA Scot was a British archaeologist best known for his studies into megalithic monuments and the nature of prehistoric rituals associated with them. Before retirement he was Principal Lecturer in Archaeology, Hull College, East Riding of Yorkshire. Burl received a volume edited in his honour. He was called by The New York Times, "the leading authority on British stone circles".
Bryn Celli DduWelsh pronunciation: [brʌn keːɬi ðɨː] is a prehistoric site on the Welsh island of Anglesey located near Llanddaniel Fab. Its name means 'the mound in the dark grove'. It was archaeologically excavated between 1928 and 1929. Visitors can get inside the mound through a stone passage to the burial chamber, and it is the centrepiece of a major Neolithic Scheduled Monument in the care of Cadw. The presence of a mysterious pillar within the burial chamber, the reproduction of the 'Pattern Stone', carved with sinuous serpentine designs, and the fact that the site was once a henge with a stone circle, and may have been used to plot the date of the summer solstice have all attracted much interest.
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.
The Heel Stone is a single large block of sarsen stone standing within the Avenue outside the entrance of the Stonehenge earthwork in Wiltshire, England. In section it is sub-rectangular, with a minimum thickness of 2.4 metres, rising to a tapered top about 4.7 metres (15 ft) high. Excavation has shown that a further 1.2 metres is buried in the ground. It is 77.4 metres (254 ft) from the centre of Stonehenge circle. It leans towards the southwest nearly 27 degrees from the vertical. The stone has an overall girth of 7.6 metres (25 ft) and weighs about 35 tons. It is surrounded by the Heelstone Ditch.
This is a list of Stonehenge replicas and derivatives that seeks to collect all the non-ephemeral examples together. The fame of the prehistoric monument of Stonehenge in England has led to many efforts to recreate it, using a variety of different materials, around the world. Some have been carefully built as astronomically aligned models whilst others have been examples of artistic expression or tourist attractions.
Manhattanhenge, also inaccurately called the Manhattan Solstice, is an event during which the setting sun or the rising sun is aligned with the east–west streets of the main street grid of Manhattan, New York City. The sunsets and sunrises each align twice a year, on dates evenly spaced around the summer solstice and winter solstice. The sunset alignments occur around May 28 and July 13. The sunrise alignments occur around December 5 and January 8. Excellent places for viewing Manhattanhenge are 14th, 23rd, 34th, 42nd, and 57th Streets.
Mayburgh Henge is a large prehistoric monument in the county of Cumbria in northern England. The henge is in the care of English Heritage and is a Scheduled Ancient Monument. It is 400 metres from King Arthur's Round Table Henge.
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".
Heart of Neolithic Orkney refers to a group of Neolithic monuments found on the Mainland of the Orkney Islands, Scotland. The name was adopted by UNESCO when it proclaimed these sites as a World Heritage Site in 1999.
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.
The Stripple stones is a henge and stone circle located on the south slope of Hawk's Tor, Blisland, 10 kilometres (6.2 mi) north northeast of Bodmin on Bodmin Moor in Cornwall, England, UK.
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.
