Marble altar base with mythological reliefs from the Angera Mithraeum

White marble base of an altar, kept in the Chapel of the castle on the hill at Angera.The top is decorated with a line of palmettes. On the front two eagles carry a festoon in their beaks; between two rosettes is inscription No. 721. The reverse shows the same motif but the eagles are replaced by two dolphins.On the left side a naked bearded figure (Jupiter) with a thunderbolt grasps a kneeling figure whose feet end in snake-tails. On the right side a similar scene with a figure with a trident (Neptune?) against a bearded Giant lifting a piece of rock.