The western front, with a door and window, bears a painting on its gable.
Altered by the sun and the elements, it shows an example of the exterior decorations, probably numerous in the region, and of which very few have been preserved until today because of the rigorous climatic condition.

The main subject of the representation on the gable is the Virgin of Mercy crowned by the angels.
Above, there is a half-length representation of Christ, coming out of a tomb, with a city in the background which is supposed to be Jerusalem.