Inside, on the left, there is a beautiful series of eight saints frescoed in the 15th century by an artist known as the “Maestro di Fol”, recognisable by the precise outlines of the figures traced with a dark brush, the calligraphic rendering of the numerous details and the sparse and almost rough effect of the faces. The cycle of frescoes clearly depicts St. Gotthard and St. Magdalene, the patron saints of the church. A blood-drenched Christ stands out, expressing intense drama.

 
St. Gotthard can also be seen on the exquisite altar frontal dating back to 1748.
After admiring the paintings, as you leave, look up and to your left: a peculiarity of this church is the presence of many crutches donated as votive offerings by pilgrims and sick people who had been healed through the intercession of the holy bishop.

The decoration on the lintel of the portal is enigmatic, featuring a compass, set squares, a saw, a bird and pincers, elements that suggest a reused artefact.
The little church is surrounded by a low fence, and in late summer you can admire the wonderful blossoming of an ancient aster.

Opposite the church, on the other side of the road, you can still see an ancient wash house.
In Roman times, there was already a port and a ferry near the village of Nave, which allowed people to cross the Piave River, connecting the Veneto plain with the Valbelluna through the Praderadego Pass. This transit role may be the reason for the devotion to Saint Oswald of Northumbria, to whom the church is dedicated.