The large mosaic (2.4 m × 2.7 m) is placed on the floor of the basilica of Uppena (modern Henchir Chigarnia in Tunisia), excavated in 1904–1905.
It probably refers to the time of the Diocletianic persecutions. Although Frend tries to link it to the "Passion of the Abitinian Martyrs" (Frend 2000, 321), the only connection is the name of Presbyter Saturninus, which, however, was quite common in Africa. All the other names are different.