Mullion in the monumental [portico of Saint Peter of Moissac.](https://sketchfab.com/3d-models/moissac-portal-92c5bb49bf7f4746ac3dd83c7fde6f39)
![](https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fclassconnection.s3.amazonaws.com%2F341%2Fflashcards%2F69341%2Fjpg%2Fsouth_portal.jpg&f=1&nofb=1)