Ostensible source/founder of Mithraism, the "mysteries" of the Roman Mysteriae Mithrae ("Mysteries of Mithras", "Mithraic Mysteries"), an astrology-centric, middle-platonic mystery cult of the 1st-4th century Roman Empire whose adherents worshiped in "caves" (i.e. Mithraea) in imitation of "Zoroaster". (Porphyry, De Antro Nympharum 6)