In 1877 the Lumière brothers came on holiday to Saint-Énogat, near Dinard, in Brittany. They were accompanied by their teachers and received by a family friend, Louis Jacolliot, a former magistrate and author of adventure novels. They stayed in a villa by the sea and it is said they set up a small laboratory at the back of the cave known as the Goulée aux Fées, which they could reach at low tide. Absorbed by their experiments in the darkness of the grotto, they let themselves be surprised by the rising tide. Seized with fright, blocked by the sea at the back of the cave, they supposedly swore never to separate if they escaped drowning. Tale or legend, the figure of the two inseparable brothers that accompanies their whole adventure as inventors and industrialists was thus forged. It is striking to recall that in this same grotto one of the legends relates a fairy vision in which the eye plays an essential role: the story of a woman going there, invited by the fairies, who, as she brushes her eye with an ointment given by them, sees the cave appear as a rich dwelling inhabited by princesses. Many of the region's goulées shelter such legends about the fairies of the swells, collected at the end of the nineteenth century by Paul Sébillot, considered the greatest folklorist of Brittany.