A man is initiated into the Mysteries of Mithras

In the panel I (W. 1.17 m) of the right bench near the entrance a naked man (his body is colored red) is walking in the direction of the cult-niche. He is being pushed forwards by a much taller person who wears a short white tunic and a shoulder cape with red stripes. His height expresses his greater importance as mystagogue. Since he seems to have a small pointed beard he may be either the Pater (a cap however is not visible) or an initiate of a lower grade. The mists however has a blindfold over his eyes and he is therefore groping forwards with outstretched hands. He is naked and helpless
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