
Inspired by the humour and attention to detail in Dante’s Divine Comedy, the sculpture is a metaphor for the gateway to purgatory. The spirit of the porter-angel is represented by a bodiless spiral with three hollow-eyed faces in a ghost-like head; the open mouth is speaking. The spiral movement symbolises the workings of the intricate lock on the gates. The porter holds the two keys and the hinged wings represent the opening and closing of the gate.