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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. [3] Newgrange consists of a large circular mound with an inner stone passageway and cruciform chamber.
The area is located eight kilometers west of Drogheda in County Meath, Ireland, in a bend of the River Boyne. It is around 40 kilometers north of Dublin. [4]Brú na Bóinne is surrounded on its southern, western and eastern sides by the Boyne; additionally, a small tributary of the Boyne, the River Mattock, runs along the northern edge, almost completely surrounding Brú na Bóinne with water.
The Newgrange cursus is a Neolithic monument used as a ceremonial procession route within the Brú na Bóinne complex. The ancient trackway is 100m long and 20m wide. The ancient trackway is 100m long and 20m wide.
The UNESCO World Heritage Site of Newgrange is located 8 km (5.0 mi) west of the town. Drogheda, 1749 Drogheda was founded as two separately administered towns in two different territories: Drogheda-in- Meath (i.e. the Lordship and Liberty of Meath , from which a charter was granted in 1194) and Drogheda-in-Oriel (or ' Uriel ', as County Louth ...
According to Petrie (Letter to Larcom, Aug. 1837), the name may mean 'Ryefort' (it appears as Lios a' tSeagail, seagail meaning rye in Irish, in early maps).However lios in Irish refers generally to a court or enclosed area, so it may be that the name originally referred to the area enclosed by the dolmens, on which Listoghil stands, rather than the cairn itself.
Geodetic latitude and geocentric latitude have different definitions. Geodetic latitude is defined as the angle between the equatorial plane and the surface normal at a point on the ellipsoid, whereas geocentric latitude is defined as the angle between the equatorial plane and a radial line connecting the centre of the ellipsoid to a point on the surface (see figure).
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The ITRS defines a geocentric system of coordinates using the SI system of measurement. An International Terrestrial Reference Frame (ITRF) is a realization of the ITRS. Its origin is at the center of mass of the whole earth including the oceans and atmosphere.