This is the earliest known sculpture of a Roman Mithraic tauroctony.
Alcimus T. Cl(audi) Liviani ser(vus) vilic(us) S(oli) M(ithrae) v(otum) s(olvit) d(onum) d(edit)
Tauroctonia de Walbrook
The image of Mithras killing the bull, found near Walbrook, is surrounded by a Zoadiac circle.
Ulpius Silvanus / factis Arausione / emeritus leg(ionis) II aug(ustae) / votum solvit
Mithraeum of Housesteads
The Housesteads Mithraeum is an underground temple, now burried, discovered in 1822 in a slope of the Chapel Hill, outside of the Roman Fort at the Hadrian's Wall.