Ernest Renan suggested that without the rise of Christianity, we might all have embraced the cult of Mithras. Nevertheless, it has had a lasting influence on secret societies, religious movements and popular culture.
A mithraeum – also known as a speleum, antrum or crypta – is an ideally underground and not excessively large building that represents the universe as a whole.
The Mithraeum of Lucretius Menander was installed in the early 3rd century in an alley to the east of a Hadrianic building named after the solar god temple.
TNMM6 – CIMRM 224
Deo Invicto Mithrae / Diocles ob honorem / C. Lucreti Menandri / Patris / D(ono) D(edit) D(edicavit).