The chapel dedicated to St. Méen is located near Grandrieu. This may have been a pagan place of worship. A cavity dug in the granite forms a kind of small bathtub always filled with water. This is where parents once plunged children skin diseases, hoping for healing. Around the 12th century the place was Christianized with the construction of a rough cross. In 1863 when after the construction of the road from Chapeauroux to Grandrieu the access got easy a chapel was built there, which got inaugurated in 1871.

The basin is near the cross.

Saint Méen of Brittany (~ 540-617) is a Breton saint, thought to be Cornish or Welsh in origin. He is known in Cornwall as Saint Mewan.