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The portal stones are positioned at either side of the lower side of the capstone, marking the tomb's entrance. A threshold stone (or sill) stone lies transverse on an east-west crevice in front of them. [6] The cairn extends an average of 3 m (9.8 ft) from the chamber. [11]
Poulnabrone dolmen, the Burren, County Clare, Ireland Dolmens in Amadalavalasa, Andhra Pradesh, India. A dolmen (/ ˈ d ɒ l m ɛ n /) or portal tomb is a type of ...
Megalithic monuments are found throughout Ireland, and include burial sites (including passage tombs, portal tombs and wedge tombs (or dolmens)) and ceremonial sites (such as stone circles and stone rows).
Portal tombs (often referred to as dolmens) are mainly located in the northern half of the country. Such tombs have a straight sided chamber often narrowed at the rear. The entrance is marked by tall portal stones. On top lies a huge single cap stone resting on the portal stones on the front and sloping at the rear where it rests on the backstone.
Proleek dolmen is composed of two portal stones, a lower backstone and a massive capstone, which weighs about 40 tonnes. [5] The portal faces northwest. 90 metres (100 yd) to the SE is a Wedge-shaped gallery grave ("Giant's Grave") with a 6.7 m (22 ft) gallery.
Location: Ballynageeragh, Dunhill, County Waterford: ... Ballynageeragh Portal Tomb is a dolmen and National Monument situated in County Waterford, Ireland. [2] [3] [4]
The entrance location and size determines, ultimately, whether the structure is a passage grave or a dolmen (J. Ross). In the Netherlands ( Drenthe ), where this form is very common, structures with no passages are known as portal graves; which otherwise, as portal tombs form a sub-group of megalithic tombs on the British Isles but structurally ...
[2] [3] The tomb is consists of two portal stones, an entrance stone and a collapsed colossal roof stone, which weighs an estimated 75 tonnes. The capstone is the second largest in Ireland after the one at Brownshill dolmen in County Carlow. The tomb has a single chamber. [4] The name Aideen is said to refer to Étaín, a figure in Irish ...