Bas-relief

An incomplete marble plaque was broken into three pieces and burned, probably by the first Christians on the site. It depicts the taurobolus of Mithra following his iconographic codes. Despite the damage, this sculpture reveals the lower part of the scene of the sacrifice of the bull and in particular the sword piercing the neck of the animal and the hindquarters of the dog biting it. An inscription placed in a band below the relief reads partially:
[MARIN]... POSVIT translated as "Marinus has posed". This mention and the small size of the bas-relief could also be interpreted as an ex-voto offered by a certain Marinus without necessarily being the scene associated with the main altar of the sanctuary.