This relief of Mithras as a bullkiller, probably found in Rome, has been part of the Palazzo Mattei collection since at least the end of the 18th century.
Even if only a few fragments remain, it is very likely that the main niche of the Mitreo di Santa Prisca contained the usual representation of Mithras killing the bull.
It is not certain that the marble relief of Mithras killing the bull was found on Capri, in the cave of Matromania, where a Mithraeum could have been established.