Mitreo di Vulci

The Mithraeum of Vulci was discovered in 1975, during the excavations of a Roman Villa. The elevation of the lateral benches, more than a meter, is quite unusual as remarked Roger Beck.

On each side a row of six of these arches is flanked by two small square niches. A third niches is set in the centre of the SW bench, with three arches to each side and a smaller arch in the corresponding position on the opposite bench.

Rightly, Sgubini Moretti compares this structural feature with the mosaics of Sette Porte and Sette Sfere at Ostia as a further — and most significant — example of
…