In 1883 French soldiers uncovered the ruins of a 1st-6th century synagogue in Tunisia, in a town called Hammam-Lif. Originally thought to have been a church due to the structure, it became obvious what the original site was once the floor mosaics were uncovered.
This mosaic is of a menorah, made of stone and mortar. The size is 4.4cm by 89.5cm by 57 cm and dates to the 6th century C.E.
This mosaic is a menorah with an etrog and lulav. The size is 4.4 cm by 88.7cm by 57.5cm and also dates to the 6th century C.E.
The synagogue was built over the Roman and Byzantine time period. Rome was also personified in a mosaic.
This particular mosaic dates from the 1st-2nd century C.E. and the size is 3.2cm thick with a 53.9cm diametre. Many of the mosaics can be seen on the Brooklyn Museum website.
The Mosaics of Hammam Lif by Franklin M. Biebel. JStor article.
Ancient Jewish Art and Archaeology in the Diaspora by Rāḥēl Ḥa̱klîlî. Via Google Books.
The Ancient Synagogue: The First Thousand Years by Lee I. Levine. Via Google Books.
Inscribing Devotion and Death: Archaeological Evidence for Jewish Populations by Karen B. Stern. Via Google Books.
Synagogue at Hammam-Lif by Yitzchak Schwartz. Exhibition blog entry for the Metropolitan Museum of Art.