Alatri (Fr) - La Porta Maggiore dell'Acropoli (Gate in the megalithic wall)

Alatri has well preserved fortifications constructed of tetrahedral and polygonal blocks of local limestone well jointed. It is almost entirely an embanking wall, as is the rule in the cities of this part of Italy, with a maximum height, probably, of about 9 m. Two of the gates (of the perhaps five once existing) are still to some extent preserved, and three posterns are to be found.
In the centre of the city rises a hill which was adopted as the citadel. Remains of the fortifications of three successive periods can be traced, of which the last, perhaps a little more recent than that of the city wall, is the best preserved. In the first two periods the construction is rough, while in the third the blocks are very well jointed, and the faces smoothed; they are mostly polygonal in form and are much larger (the maximum about 3 by 2 m) than those of the city wall. A flat surface was formed partly by smoothing off the rock and partly by the erection of huge terrace walls which rise to a height of over 15 m, enclosing a roughly rectangular area of 220 by 100 m. Two approaches to the citadel were constructed, both passing through the wall; the openings of both are rectangular. The architrave of the larger, known as Porta Maggiore, measures about 5 m in length, 1.5 m in height, 1.8 m in thickness; while that of the smaller is decorated with three phalli in relief.

L'acropoli di Alatri è una vasta area sopraelevata posta nel cuore del centro storico, sulla cima del colle.
È di notevole interesse per le sue mura in opera poligonale, costituite da diversi strati di megaliti polimorfici che spesso raggiungono la lunghezza di 3 metri, provenienti dalla stessa collina e fatti combaciare perfettamente ad incastro senza l'ausilio di calce o cementi. Il perimetro delle mura è di 2 km.
L'acropoli, oltre alla rampa d'accesso, presenta due porte d'ingresso, la Porta Maggiore o dell'Areopago e la Porta Minore o dei falli. Su di essa sorge la cattedrale dedicata a san Paolo.
Osvaldo Rea dimostra attraverso prove documentali che la Sectio Aurea si riscontra sia nella visione aerea dell’intera costruzione pelasgica, sia nelle proporzioni della Porta Maggiore e della porta minore dell’Acropoli di Aletrium. La Sectio Aurea dell'Acropoli determina anche la posizione dell'opera orientata verso la Luce che sorge a Est.
La Porta Maggiore è posizionata verso il tratto sudorientale dell'Acropoli all'opposto della porta dei falli posizionata verso ovest dove c'è l'ombra.

Font : Wikipedia

www.youtube.com/watch?v=ByujbhKCT74

Taken in: Italia / Lazio / Alatri (show map)

Taken on: July 20, 2009

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Camera: Panasonic DMC-FX7, f/5.6, 1/250 sec, 5.8mm, ISO 80 (more info) (hide info)

Camera:	Panasonic DMC-FX7
Aperture:	f/5.6
Exposure Time:	0.004 sec (1/250)
Focal Length:	5.8mm
ISO:	80
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Landscape
Exposure Mode:	Auto
Metering Mode:	Multi-segment
White Balance:	Auto
Scene Capture Type:	Landscape
Color Space:	sRGB
Software:	Microsoft Windows Photo Gallery 6.0.6001.18000
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