 The obscure goddess Angerona, whose iconography depicted silence and secrecy, and whose festival followed that of Ops, seems to have regulated communications between the realm of the living and the underworld; she may have been a guardian of both arcane knowledge and stored, secret wealth.When a Roman died, the treasury at the Temple of Venus in the sacred grove of the funeral goddess Libitina collected a coin as a "death tax".The Republican poet Ennius locates the "treasuries of Death" across the Acheron.