Guess the French region with the help of this clue: a Cornish connection

In which of France's 13 regions was this photo taken?

The small chapel is named after a monk who came to France from Cornwall

This small chapel, built into a rock face, is named after the monk who established the place of worship in the 6th Century, upon his arrival from Cornwall.

Can you guess where it is located?

Click to show answer
A) Chapelle Saint-Gildas in Morbihan, in the region of Brittany
An alternative point of view