On an iconographic level, at least one detail must be observed: a skull with two crossed crossbones appears very often under the cross (or at its feet). The symbolism thus referred to is that of the interpretation of Christ as the new Adam, which brings humanity to new life, but also links to the belief, widespread from the Middle Ages, that the Cross had been planted right above the tomb of the progenitor of the genus. human, signifying the redemption of original sin.