257-266

• Sclavi, Silvia
• Monaco, Marzia
• Carnevale, Flavio
• Ranieri, Marcello
• Gaudenzi, Silvia
• Polcaro, Vito Francesco
• Scatigno, Claudia

We conducted an investigation on the orientations and geometrical content of the Mithraea of Ostia Antica. A geometrical CAD study based on the most reliable plans from the Archives of the Sovrintendenza Speciale per il Colosseo, il MNR e l’Area Archeologica di Roma – Ostia Antica, aside with the identification of geometrical and numerical schemes and associated length units, allowed us to identify the axes of the Mithraea. Then the orientations of the axes were measured on field by means of a professional compass with ± 0.5° uncertainty. The distribution of these measured azimuths follows the topography of the city. On the contrary, the Decumanus, the main street of the town, presents an indubitable orientation toward the Winter Solstice Sunset. This was ascertained by measuring the coordinates of four significant points along the street with the help of a palmar Trimble GPS which averages 100 measures per point. The exceptional density of Mithraea in Ostia led us to suppose that a symbolic cosmic-solar value is to be searched in the orientation as a whole of the town itself, founded half a millennium before the first presence of Mithraism in Rome. The Decumanus could be considered the very holder of this symbolic value with its orientation toward the Winter Solstice Sunset, possibly making of Ostia a very special place for Mithraicism.

• History and Archaeology

• Αρχαιολογία

Ostia Antica, Mithraicism, Winter Solstice, Decumanus, Orientation of Ancient Shrines, Ancient Geometry, Triads of Integers, Roman Length units

Περιέχει 4 εικόνες και 4 πίνακες

1. Bertarione S. (2014), Ecco come nasce la Roma delle Alpi, Archeologia Viva, XXXIII, pp. 70-72.Bakker, J.T. (1994), Living and working with the gods: studies of evidence for private religion and its material environment in the city of Ostia (100-500 AD), Warszawa, JC Gieben. Beck, R. (1976), Interpreting the Ponza Zodiac: I. Journal of Mithraic Studies 1, pp. 1-19.Beck, R. (1998), The Mysteries of Mithra: a New Account of their Genesis, Journal of Roman Studies, 88, pp. 115-128.Beck, R. (2006), The Religion of the Mithras Cult in the Roman Empire: Mysteries of the Unconquered Sun, Oxford, Oxford University Press.Bruschi A. (Ed.) (2015), Portus, Ostia Antica, via Severiana. Il Sistema archeologico paesaggistico della linea di costa di Roma imperiale, Roma, DiAP Print.Campbell L.A. (1968), Mithraic Iconography and Ideology. Leiden, Brill.Dyson S. L. (2010), Rome a living portrait of an Ancient City, Baltimore, The John Hopkins University Press.Ester M., Kriegel H.P., Sander J., Xu X. (1996), A density-based algorithm for discovering clusters in large spatial databases with noise. In Simoudis E., Han J., Fayyad U. (eds.). Proceedings of the Second International Conference on Knowledge Discovery and Data Mining (KDD-96). Portland, AAAI Press, pp. 226–231.Fogagnolo S., Valenti M. (2005), Via Severiana, Roma, Istituto Poligrafico e Zecca dello Stato.Gaudenzi, S., Preite Martinez, M., Bernardini, M.L., et al., (2012), Studio interdisciplinare sui mitrei di Ostia Antica, In V.F. Polcaro (ed.) Atti del XII Convegno SIA, Albano Laziale, Italy, 5-6 October 2012, Napoli, La Città del Sole, pp. 201-217.Goiran J.P., Salomon F., Mazzini I., Bravard J.P., Pleuger E., Vittori C., Boetto G., Jonatan Christiansen J., Arnaud P.,Pellegrino A., Pepe C., Sadori L. (2014), Geoarchaeology confirms location of the ancient harbour basin of Ostia (Italy), 41, pp. 389-398.Gonzales Garcia C. & Magli G. (2014), Roman City Planning and Spatial Organization, in Clive Ruggles (ed.) Handbook of Archaeoastronomy and Ethnoastronomy, pp. 1643-1650.Gordon R.L. (1976), The sacred Geography of a Mithreum: the example of Sette Sfere, Journal of Mithraic Studies, 1, pp. 119-175.Labianca L., Sciortino I., Gaudenzi S, Patané A., Polcaro V.F., Ranieri M. (2008), An archaeoastronomical study of the neo-Pythagorean basilica at Porta Maggiore in Rome, Proceedings of the SEAC 2007 and Oxford VIII Conference Astronomy and cosmology in folk tradition and cultural heritage, Archaelogia Baltica, Klaipeda University Press, 10, 195-199.Madlenović D. (2009), Astral Path to Soul Salvation in Late Antiquity? The Orientation of Two Late Roman Imperial Mausolea from Eastern Serbia, American Journal of Archaeology, 113, pp. 81-97.Magli G. (2008), On the orientation of Roman towns in Italy, Oxford J Archaeol, 27, pp. 63–71.Malgora S. (2001), L’uso dei numeri e la ritualizzazione delle strutture cerimoniali nella topografia monumentale di Saqqara, Thesis, Bologna University.Merkelbach R.(1984), Mithras, Kőnigstern Verla Anton Hain Miesenheim GmbH.Monaco M., Gaudenzi S., Ranieri M., (2010), Among the circles: a geometrical analysis of the Teatro Marittimo in Villa Adriana, Proceedings of the 18th SEAC 2010 Conference Astronomy and Power, Gilching, Germany, in press.Ries J. (2004), Il culto di Mitra dall’India vedica ai confine dell’Impero Romano, Milano, Jaka Book.Ranieri M. (1997), Triads of Integers: how space was squared in ancient times, Rivista di Topografia Antica Journal of Ancient Topography, VII, pp. 209-244.Ranieri M. (2000), The Development of Architectural Forms of Prehistoric Turkmenistan, South Asian Archaeology, Proceedings of the 14th International Conference of the European Association of South Asian Archaeologists, Roma, Is.I.A.O., II, pp. 593-615.Ranieri M. (2002), The stone circles of Li Muri: geometry alignements and numbers, Proceedings of the 14th SEAC Conference Ligths and Shadows in Cultural Astronomy, Isili, Sardinia, pp. 58-67.Ranieri M. (2005), La geometria della pianta del tempio urbano di Marzabotto (Regio I – Ins. 5), in Culti, Forma Urbana e Artigianato a Marzabotto. Nuove prospettive di ricerca, Ante Quem, Dipartimento di Archeologia Università di Bologna, Bologna University Press, 11, pp. 73-87.Ranieri M. (2008), A geometrical analysis of Mesoamerican pre-hispanic architecture: squaring triads, numbers, length units and the calendar, Proceedings of the SEAC 2007 and Oxford VIII Conference Astronomy and cosmology in folk tradition and cultural heritage, Archaeologia Baltica, Klaipeda University Press, 10, pp. 183-194.Ranieri M. (2008b), The Pythagorean geometry of the Atreus tholos tomb at Mycenae, Proceedings of the SEAC 2007 and Oxford VIII Conference Astronomy and cosmology in folk tradition and cultural heritage, Archaeologia Baltica, Klaipeda University Press, 10, 2pp. 11-213.Ranieri M., Polcaro A. (2009), Early Bronze Age geometry in the Dead Sea region at Tel Arad and Bab edh-Dhra’ numerical squaring, harmonic compositions and length–units, Proceedings of the 17th SEAC 2010 Conference From Alexandria to al-Iskandariya: Astronomy and culture in the ancient Mediterranean and Beyond, Alexandria, Egypt, in press.Ranieri M. (2011), Himera and Pyrgi: the diagonals and the alignement of the temples, Proceedings of the 19th SEAC 2011 Conference Stars and Stones: Voyages in Archaeoastronomy and Cultural astronomy, BAR International Series 2015, Oxford, 2720, pp. 94-98.Ranieri M. (2014), Digging the archives: the orientation of Greek temples and their diagonals, Proceedings of the 21st SEAC 2013 Conference Astronomy: Mother of Civilization and Guide to the Future, Athens, Mediterranean Archaeology & Archaeometry, 14, 3, pp. 165-174.Ranieri M., (2014), Geometrie Pitagoriche e circolari nella pianta del Pantheon adrianeo, Proceedings of the 11th S.I.A. 2011 Conference Il Dentro e il Fuori del Cosmo, Bologna, pp. 15-27.Sauer, E. (2012), Mithras and Mithraism in The Encyclopedia of Ancient History, Oxford, Jhon Wiley and sons pp. 4551-4553.Storey G. R. (1997), The population of ancient Rome, Antiquity, 71, pp. 966-978.Torelli, M. (1990), Riti di passaggio maschili di Roma arcaica. Mélanges de l'Ecole française de Rome. Antiquité, 102 (1), pp. 93-106.Turcan R. (1975), Mithras Platonicus, Leiden, Brill, coll. Études Préliminaires aux Religions Orientale dans l’Empire Romaine. 47.Turcan, R. (2000), Mithra et le mithriacisme, 2nd edn., rev., Paris. Les Belles Lettres. Vermaseren, M.J. (1956), Corpus Inscriptionum et Monumentorum Religionis Mithriacae, The Hague, Martinus Nijhoff.